JPH09106658A - Recording method and information-record reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the memory capacity required for replacement of recording medium by once storing control information in a memory means and recording the information to the recording medium after the completion of data recording when the data are recorded over a plurality of the recording mediums. SOLUTION: An input information signal 17 is stored into a vibration resisting first memory 11 as a data buffer and stored in a magneto-optical disk through a signal processing part. The control information of the recording data is stored in a second memory 12. When the recording data covers a plurality of disks, the disk is replaced with the next disk with a changer stocker 2 after the recording on the disk. The recording data during the replacement are stored in the memory 11. Recording is restarted into the mounted disk. At the time point when the data recording is completed, the control information is written to each disk from the memory 12. Thus, the capacity of the memory storing the data required for the replacement of the disks can be decreased, and the simplification of the reproducer is achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording method and an information recording / reproducing apparatus for recording information on a recording medium such as a magneto-optical disc or an optical disc.

[0002]

2. Description of the Related Art Conventionally, there is a recording / reproducing apparatus configured to record or reproduce an information signal using a recording medium such as a magneto-optical disk or an optical disk.

Particularly when recording an information signal as seen in a mini-disc among magneto-optical discs, management information (UTOC information) such as the order of written information signals and address information is recorded after the writing of the information signal is completed. It is necessary to write to the disc.

The management information is information indicating the writing position of the information signal on the disc, and is essential information when reading. Therefore, if the disc is taken out after writing the information signal and before writing the management information, the information signal cannot be read.

Conventionally, in the case of reproducing continuous data such as a music signal, in order to avoid the occurrence of a silent period and shorten the disc exchange time as seen in the disc changer device, A device has been disclosed in which an information signal previously recorded on a disk is read and stored in a memory (Japanese Patent Application No. 5-264278).

On the other hand, in the case of recording a continuous long time data such as a music signal or a video signal, it may be possible to record a plurality of recording media such as a magneto-optical disk or an optical disk. In this case, a method is conceivable in which the recording data is temporarily stored in the memory for the time required to replace the recording-completed disc with the non-recorded disc. As a result, data can be recorded on the disc so that no data loss occurs.

That is, when recording data continuously,
Before exchanging the capacity of the first disc, when exchanging with the second disc, after recording the first management signal on the first disc, the exchanging operation for the second disc is performed. Become.

An example of the above-described disc changer device for recording will be described below with reference to the drawings.

FIG. 2 shows an operation diagram during recording of a conventional mini disk. The recorded music signal 20 is compressed by the compression circuit 21, accumulated in the anti-vibration memory 22, and then recorded in the magneto-optical disk.

At this time, when recording on the A disk is completed,
Management information, so-called UTOC (User's Stock), is written in a predetermined area. After the writing is completed, the A disc is carried into the disc stocker 27 from the traverse mechanism 25, and then the B disc is carried out. During the disc exchange, the data to be recorded is stored in the memory 22, and after the B disc is mounted on the traverse, the recording of the data stored in the memory 22 is restarted. When the recording of the data 20 is completed, the UTOC of the final disc is written, and the recording of a plurality of sheets is completed.

[0011]

However, the above-described changer device for mini-discs has management information (so-called user's stock) for managing recording or reproduction of the recorded data after recording data on the first disc. ) Must be recorded on the disc. The management information indicates the order and recording position of the data, and the recorded management information is indispensable for reproducing the data.

Conventionally, in order to record address information, an optical head for recording / reproducing is located at the outermost periphery at the end of recording. Therefore, in order to record the address information in the user's area on the inner circumference of the disc, it takes time for the optical head to move to a predetermined area.

For this reason, there is a problem that a considerable amount of memory capacity is required because it is necessary to store continuously reproduced data for the above operation time.

Further, in the conventional disc changer device, when recording continuously on the disc, 1
Since the address information is recorded in a predetermined area of the first disc after the data is written on the second disc, the first address information is lost when the second disc is recorded. For this reason, information related to each other on multiple discs,
There was no way to confirm the address information recorded in the order information.

In view of the above-mentioned conventional problems, the present invention reduces the recording memory capacity for recording data required for exchanging a recording medium such as a disk, thereby simplifying the apparatus and recording / reproducing information. The purpose is to provide a device.

[0016]

In order to solve the above-mentioned problems, according to the present invention, when continuous data is recorded on a plurality of recording media, management information regarding the recording state of the data on the recording media is once stored in the storage means. After the storage and the recording are completed, the management information of the first, second, ..., Nth recording medium stored in the storage means is stored in the corresponding predetermined management area on the first, second, ..., Nth recording medium. It is characterized by recording in.

With the above configuration, after recording continuous data on the first disk (recording medium),
Replace the management information on the second disc without writing the management information on the first disc, and without losing the data, 2
Since the recording is started on the second disk, the disk replacement time is shortened, and the memory capacity for storing data can be significantly reduced.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention relates to a recording state of the data in the plurality of recording media in order to record continuous data over the plurality of recording media. After the management information is temporarily stored in the storage means and the recording of the data is completed, the management information of the first, second, ..., Nth recording medium stored in the storage means respectively corresponds to 1, 2 ,. It is assumed that the management information is recorded in a predetermined management area on the second recording medium, and after the continuous data is recorded on the first disk (recording medium), the management information is set to 1
The second disk is exchanged without writing to the second disk, and recording is started on the second disk without losing data, so the disk exchange time is shortened and the memory capacity for storing data is greatly increased. Can be reduced.

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram of a disc changer device as an information recording / reproducing device according to a first embodiment of the present invention. However, the servo block is omitted.

In FIG. 1, 1 is a disk, 2 is a changer stocker, 3 is a magnetic head, 4 is an objective lens,
5 is a spindle motor, 6 is an optical head, 7 is an RF circuit,
8 is a magnetic head drive circuit, 10 is a signal processing circuit, 11 is a first memory for storing vibration-proof data, 12 is a second memory for storing address data, 13 is a voice compression circuit, 14 is an A / D circuit, 15 is a system controller,
Reference numeral 16 denotes a display device.

The operation of the disc changer device constructed as described above will be described below.

First, the input information signal 17 is A / D
After being converted into a digital signal by the conversion circuit 14, it is compressed by the audio compression circuit 13 and stored in the first vibration-proof memory 11 as a data buffer. Furthermore, after error correction is performed by the signal processing unit 10, the magnetization of the magneto-optical disk 1 is erased by laser irradiation from the optical head 6,
The magnetic head drive circuit 8 changes the magnetic field direction of the magnetic head 3 to record a signal on the magneto-optical disk 1. This method is used as a magnetic field modulation type overwriting method for mini disks and the like.

After the data recording is completed, the UTOC of the data recorded on the magneto-optical disk is stored in the second memory 12 from the system controller section through the signal processing section. When recording is completed over a plurality of discs, the UTOC stored in the second memory is finally recorded on each disc.

The UTOC existing on the second memory is
It can be displayed on the display 16 through the system controller, and can display information related to each other and order information of a plurality of disks.

Further, the first memory 11 for vibration control and the second memory 12 may be area-divided by the same memory.

Next, the operation of the changer device in the mini disk will be described with reference to FIG.

FIG. 3 shows an operation diagram of the five mini disc disc changer at the time of recording. Since the maximum recording time of a mini disk is 74 minutes, it is conceivable to continuously record on a plurality of disks in order to record for a long time, such as during air check of PCM broadcasting.

Continuous data to be recorded (music signal etc.) 20
Is compressed by the compression circuit 21 and stored in the anti-vibration memory 22, and then records data on the magneto-optical disk.

When the capacity of the information signal is enormous with respect to the capacity of one magneto-optical disk, after the recording of the first disk is completed, the disk changer mechanism 27 automatically selects the first magneto-optical disk A. It is removed and replaced with a second magneto-optical disk B.

That is, when recording on the A disc is completed,
After the A disc is carried into the disc stocker 27 from the traverse mechanism 25, the B disc is carried out. During the disc exchange, the data to be recorded is stored in the memory 22,
After mounting the B disk on the traverse, recording of the data stored in the memory 22 is restarted.

Similarly, when the second magneto-optical disk is insufficient for the capacity of the information signal, the third magneto-optical disk C is automatically replaced and continuously recorded.

When the data 20 is completed, the management information, so-called UTOC (User Stock), is written in a predetermined area of each disk. After the writing is completed, recording on a plurality of sheets is completed.

In this embodiment, the disc changer device has been described. However, instead of this, for example, when continuous data is recorded using a plurality of disc devices, a plurality of disc memories are used to store the data in an external memory. It may be a device for recording operation of the disk device.

In this embodiment, a magneto-optical disk is used as the recording medium, but a phase change type optical disk or a rewritable DVD or other recording medium may be used instead.

As described above, according to the present embodiment, the address information is not recorded for each disk, but the address information is recorded at once after the recording is completed, so that the memory capacity can be reduced.

[0036]

As described above, according to the present invention, when continuous data is recorded over a plurality of recording media, the management information for controlling the recording / reproduction of the data is stored in the second memory, and the data ends. At this point, the time for exchanging the recording medium is shortened by writing in the respective recording media, so that the first memory capacity can be reduced. In other words, after the data is recorded on the first disc, the management information necessary for recording and reproduction is immediately exchanged to the second disc without writing the management information on the first disc, and the second disc is not lost. Since the recording is started, the disc replacement time can be set to be short, so that it is possible to realize a recording method and a recording / reproducing apparatus in which the memory capacity for storing data is significantly reduced.

Further, when the number of disks to be stored increases, it takes time to load and unload the disks and the time to replace the disks also increases, but the effect of reducing the capacity of the data memory by the recording time of UTOC is great.

[Brief description of the drawings]

FIG. 1 is a block diagram of a recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is an operation diagram of a conventional disc changer device.

FIG. 3 is an operation diagram of the disc changer device according to the first embodiment of the present invention.

[Explanation of symbols]

 1 disk 2 stocker 3 magnetic head 6 optical head 10 signal processing unit 11, 22 first memory for vibration isolation 12, second memory

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G11B 27/00 D 27/10 AD

Claims (3)

[Claims] 1. In order to record continuous data across a plurality of recording media, management information regarding a recording state of the data on the plurality of recording media is temporarily stored in a storage means, and the data is recorded. After the completion of the above, the management information of the 1, 2 ... Nth recording medium stored in the storage means is recorded in a predetermined management area on the corresponding 1, 2 ... Nth recording medium, respectively. A recording method characterized by the above. 2. A recording means for recording the continuous data on a plurality of recording media so as to record the plurality of recording media, a storage means for storing the plurality of recording media, and a storage means for storing the plurality of recording media. Selecting means for selecting an arbitrary recording medium from among the plurality of recording media thus recorded, and management information relating to a recording state of the data on the plurality of recording media. Storage means for storing the management information of the first, second, ..., nth recording medium stored in the storage means, after the recording of the data is completed,
An information recording / reproducing apparatus having control means for performing recording in a predetermined management area on the corresponding first, second, ..., Nth recording medium. 3. The management information recorded on each recording medium includes at least information capable of determining what number medium the recording medium has recorded the continuous data. The recording method according to claim 1 or the information recording / reproducing apparatus according to claim 2.