JPH07296560A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To suppress noncoincidence of data and index information on a recording medium and to suppress the imperfection of the index information according to a data failure in a specific region part when a power source supply is interrupted. CONSTITUTION:A system controller 12 forms the TOC information consisting of address information and recording date information corresponding to the respective tracks of a disk 21 after data recording, includes this information in the link sector of the final cluster and has the information recorded on the disk 21 and stops the recording action when this system controller judges the end of recording of the data. The system controller 12 freshly forms the data including character input information in the TOC information formed in the manner described above and stores the data in the TOC storage region of a shock-proof memory 5 in response with the stop of the recording action before the power source of the device is cut off. The system controller executes the processing similar to the signal processing executed at the time of data recording, thereby recording the data in the user TOC region of the disk 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus such as a magneto-optical recording / reproducing apparatus.

[0002]

2. Description of the Related Art Conventionally, TOC is used as index information composed of address information on a disc indicating each track and an empty area, character title information of each track and disc, and recording date / time information of each track and disc. (Table Of Content
s) There is information and the like, and a magneto-optical disk such as a mini disk is a recording medium whose data is managed by such TOC information. An apparatus using such a magneto-optical disk reads out the TOC information for managing data from the magneto-optical disk when the magneto-optical disk is mounted, and
Data is stored in a storage means such as a memory, and reproduction, recording, and editing of data are controlled based on the TOC information stored in the storage means. Each operation will be described below.

The reproduction of data is performed by recognizing the delimiter of the data by the TOC information stored in the storage means, and the recording of the data is performed by the TOC stored in the storage means.
By recognizing the recordable area in the recording medium from the information,
After recording the data, the TOC information stored in the storage means is rewritten with the TOC information according to the recording result, and the TOC information in the storage means is recorded in the specific area of the recording medium.
C information was rewritten.

[0004]

However, in the above conventional apparatus, after the index information is changed by recording the data, the power supply is cut off before the changed index information is recorded in the specific area of the recording medium. However, the data recorded on the recording medium and the index information do not match, and accurate control cannot be performed even if the index information is read and the reproduction and recording are controlled. That is, there is a problem that the data recorded on the recording medium cannot be accurately read out and that accurate data recording cannot be performed.

Further, such index information is collectively recorded in a specific area portion on the recording medium. Therefore, data is damaged in such a specific area portion and the index information is incomplete. If this happens, there is a problem that the data related to this index information cannot be reproduced.

According to the present invention, it is possible to suppress the mismatch between the data on the recording medium and the index information when the power supply is cut off, and to prevent the incompleteness of the index information due to the data corruption in the specific area portion. It is an object of the present invention to provide a recording / reproducing device.

[0007]

In order to achieve the above object, the invention according to claim 1 uses a recording medium in which reproduced data and index information for managing the reproduced data are recorded, and this recording is performed. Read-out means for reading the reproduction data and index information from the medium, storage means for storing the index information read by the read-out means, and control of data reproduction and recording based on the index information stored in the storage means When the data is recorded by the control means, index information corresponding to the data is created and stored in the storage means, and the index information stored in the storage means is stored in the storage medium. In the information recording device that rewrites the index information recorded in the specific area, the control means records the data. In creates the index information corresponding to the data recorded included in the recording data, and to record the recording data on the recording medium.

According to a second aspect of the present invention, there is used a recording medium in which reproduced data over a plurality of tracks and index information for managing the reproduced data are recorded, and a link sector is provided as a joint between recording units. Reading means for reading reproduction data and index information from the recording medium, storage means for storing the index information read by the reading means, and reproduction and recording of data based on the index information stored in the storage means When the data is recorded by the control means, the index information corresponding to the data is created and stored in the storage means, and the index information stored in the storage means is stored in the storage means. In an information recording device that rewrites the index information recorded in a specific area of the recording medium. Te, said control means, at the time of data recording, the indexing information corresponding to the data recording is intended to be recorded in the link sector is a joint of the recording unit.

According to a third aspect of the invention, the control means comprises:
At the time of recording data, when creating index information according to the data recording, the index information is used as address information of reproduction data on the recording medium,
It is composed of the recording date and time information.

[0010]

Therefore, according to the first aspect of the invention, after the control means records the data, the index information corresponding to the recording is created and stored in the storage means, and the index information stored in the storage means. While rewriting the index information recorded in a specific area of the recording medium,
At the time of data recording, the control means creates index information according to the data recording and includes it in the recording data, records the recording data including this index information in the recording medium, and includes it in the recording data. By reading the index information obtained, the data on the recording medium can be matched with the index information, and incompleteness of the index information can be suppressed.

According to the second aspect of the invention, after the control means records the data, index information corresponding to the recording is created and stored in the storage means, and the index information stored in the storage means is recorded. In addition to rewriting the index information recorded in a specific area of the medium, at the time of data recording, the control means creates index information according to the data recording and includes it in the link sector which is the joint of the recording units. By recording the link sector containing the information on the recording medium together with the recording data and reading the index information contained in the recording data, the data on the recording medium and the index information can be matched, Incompleteness of index information can be suppressed. By using the link sector provided in advance as the area for including the index information, the index information can be included in the recording data without particularly tampering with the recording data.

According to a third aspect of the present invention, when the control means creates index information according to the data recording at the time of recording data, the created index information is used as address information of reproduction data on the recording medium. ,
By configuring with the recording date and time information, the latest address information of the reproduction data on the recording medium can be selected by comparing the recording date and time information.

[0013]

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic structure of a magneto-optical disk apparatus as an information recording / reproducing apparatus which is an embodiment of the present invention, and FIG. 2 shows a recording state of a disk used in the magneto-optical disk apparatus. 3 is an explanatory view showing the data recording structure of the disc, and FIG. 4 is a flow chart showing the data recording operation of the magneto-optical disc device. The magneto-optical disk device as the information recording / reproducing apparatus according to the present invention is adapted to digitize and record analog information such as audio data on the magneto-optical disk.

Referring to FIG. 1, the data reproducing operation will be described. The optical pickup 1 irradiates a disk 21 as a recording / reproducing recording medium with light, and the disk 21
It is a reproducing head that captures the reflected light from
The RF signal recorded in 1 is read.
The RF amplifier 2 amplifies the RF signal read by the optical pickup 1 and sends it to the encoder / decoder / signal processing circuit 3. Also, RF amplifier 2
Generates a servo control signal such as a focus error signal and a tracking error signal from the signal, and the servo circuit 4
It is designed to be sent to. Encoder / Decoder /
The signal processing circuit (hereinafter referred to as a signal processing circuit) 3 includes a system controller 12 for processing subcodes and the like.
It is provided so that it can communicate with
The F signal is demodulated and converted into digital information, and the digital information is subjected to predetermined processing such as error correction and transferred to the memory controller 4.

The memory controller 4 includes a signal processing circuit 3
The writing operation and the reading operation of the shock proof memory 5 are controlled in accordance with the instruction from the system controller 12 so that the digital information after the above is stored in the shock proof memory 5. The memory controller 4 transfers the digital information output from the signal processing circuit 3 to the shock proof memory 5 and transfers the digital information output from the shock proof memory 5 to the data expansion / compression circuit 6. There is.

The shock proof memory 5 is adapted to temporarily store the digital information output from the signal processing circuit 3, and a DRAM (Dynamic Random Access).
Memory). The shock proof memory 5 is arranged between the signal processing circuit 3 and the data expansion / compression circuit 6, and protects digital information in order to prevent interruption of recording / reproduction due to disturbance such as vibration. For the purpose of absorbing the difference between the transfer speed of digital information output from the signal processing circuit 3 and the transfer speed of digital information input to the data expansion / compression circuit 6, and storing the TOC information. It is provided.

The data decompression / compression circuit 6 decompresses the digital information outputted from the memory controller 4 and time-compressed at a predetermined compression rate on the time axis to obtain a D signal from the comparator 7.
The data is transferred to the A / A converter 7a, reproduced here to the original analog information, and then output to the output terminal 18. Output terminal 18
Is connected to an output unit (not shown) having a speaker and the like. The A / D converter 7b will be described later. The feed motor 8 moves the optical pickup 1 to the disc 21.
Is a motor for moving in a direction perpendicular to the recording track (not shown). The spindle motor 9 is a motor for rotating the disk 21. The driver circuit 10 supplies electric power to the feed motor 8, the spindle motor 9, and a drive device (not shown) that drives the objective lens (not shown) of the optical pickup 1 in order to operate them. There is.

The servo control circuit 11 includes an optical pickup 1
This is a circuit for field-back controlling each of the above-mentioned devices driven by the driver circuit 10 so that an operation such as causing light emitted from the optical disc to follow a target recording track of the disk 21 is accurately performed. This servo control circuit 11
According to an instruction from the system controller 12, a control amount such as focus, tracking and spin is determined based on the servo signal output from the RF amplifier 2, and the control amount is sent to the driver circuit 10 as a control signal. .

System controller (control means) 12
Is a microcomputer that centrally manages the signal processing circuit 3, the memory controller 4, the servo circuit 11, the power supply circuit 13, and the head drive device 14. Input device 1
6 is composed of a switch, a key, etc. not shown,
For example, after a switch is turned on to enable input, a manual input operation with a keyboard or the like causes a plurality of processing operations such as writing and erasing of a plurality of digital information on the disk 21, and a plurality of data recorded on the disk 21. The reproduction order (readout order) is input to the system controller 12.

The power supply circuit 13 includes the optical pickup 1 and RF.
Power is supplied to the amplifier 2, the signal processing circuit 3, the driver circuit 10, the servo control circuit 11, and the head drive device 14.

To explain the data recording operation, the input terminal 19 is connected to an input section (not shown) having a microphone and the like, and the A / D converter 7b converts the analog information input from the input terminal 19 into digital information. The data is then transferred to the data expansion / compression circuit 6. The data decompression / compression circuit 6 compresses the time axis of the digital information output from the A / D converter 7b to a predetermined compression rate, for example, about 1/5 and transfers it to the memory controller 4.

The memory controller 4 transfers the digital information output from the data decompression / compression circuit 6 to the shock proof memory 5 and is stored in the shock proof memory 5 when the digital information is not read from the shock proof memory 5. The data amount of the digital information is detected by monitoring the address of the shock proof memory 5, and the detection result is output to the system controller 12. Then, when the data amount of the shock proof memory 5 reaches a predetermined value, the system controller 12 outputs the digital information stored in the shock proof memory 5 to the signal processing circuit. At this time,
The memory controller 4 also aims to absorb the difference between the digital information output from the shock proof memory 5 and the transfer speed of the digital information input to the signal processing circuit 3.

The signal processing circuit 3 includes a memory controller 4
The digital information output from the device is modulated, converted into an RF signal, and transferred to the head drive device 14. The head driving device 14 transfers the RF signal output from the signal processing circuit 3 to the recording head 15, and also allows the recording head 15 to accurately record the RF signal on the target recording track of the disk 21. The recording head 15 is moved in a direction orthogonal to the recording track of the disk 21. The recording head 15 records the RF signal in the recording area of the disk 21. Further, the recording head 15 records the TOC information in the writing area of the disc 21.

As shown in FIG. 2, the disc 21 used for recording and reproducing has a lead-in area in which disc control signals and the like are recorded in order from the inner circumference side to the outer circumference side of the disc, as shown in FIG. User T as a writing area for writing information about a plurality of recorded data groups
It has an OC area, a program area for recording a plurality of individually completed data groups, and a lead-out area in which a disk control signal and the like are recorded.

As shown in FIG. 3, the data recording structure in the program area has 424-byte compressed data as one sound group and 11 sound groups as two sound groups.
Arranged in a sector, 36 sectors, which is a total of 4 sub-sectors and link sectors added to the compressed data of 32 sectors, are called 1 cluster, and data recording is performed in units of this cluster. The link sector using three sectors is used as a joint when recording and is not used for recording information.

In the above structure, when the disc 21 is mounted on the magneto-optical disc device, the optical pickup 1
The RF signal is read from the user TOC area of the disk 21. Then, the RF signal is amplified by the RF amplifier 2, demodulated or subjected to predetermined signal processing by the signal processing circuit 3 and restored as TOC information, and then the memory controller 4
And is stored in the TOC storage area provided in the shock proof memory 5.

At the time of reproduction, the memory controller 4 reads out the necessary TOC information from the TOC storage area of the shockproof memory in response to a request from the system controller 12 and sends it to the system controller 12. Then, the system controller 12 makes the servo circuit 1 based on the TOC information.
Control 1

When a disc playback command is issued from the input device 16, the system controller 12 recognizes the start address and end address of each song from the TOC information, and based on this information, an optical pickup is performed from the program area of the disc 21. The RF signal is read by 1. This RF signal is amplified by the RF amplifier 2, demodulated or subjected to predetermined signal processing by the signal processing circuit 3, restored as digital information, and sent to the memory controller 4. At this time, the digital information is data in a time axis compressed state.

On the other hand, the RF signal amplified by the RF amplifier 2 is also sent to the servo circuit 11 as a servo control signal used for feedback control. Servo control circuit 1
1 determines the control amount according to an instruction from the system controller 12 based on the servo control signal, and outputs the control signal to the driver circuit 10. Then, the driver circuit 10 operates the feed motor 8, the spindle motor 9, and the objective lens driving device of the optical pickup 1 according to the magnitude of the control signal. As a result, the optical pickup 1 is sent to the target recording track, the rotation speed of the disk 21 is controlled to a predetermined value, and the position of the objective lens (not shown) is driven so as to accurately follow the recording track.

The digital signal sent to the memory controller 4 is written in the data area of the shock proof memory 5 and temporarily stored therein, and is read out to the memory controller 4 in the order of writing. Then, the digital information output from the memory controller 4 is sent to the data decompression / compression circuit 6, where it is time-axis decompressed. The digital information that has passed through the data decompression / compression circuit 6 is converted into original analog information by the D / A converter 7a, sent from the output terminal 18 to an output unit (not shown), and output as a voice signal, for example.

At the time of recording, the memory controller 4 requires the TO
The C information is read from the TOC storage area of the shock proof memory and sent to the system controller 12. Then, the system controller 12 controls the servo circuit 11 based on the TOC information.

When there is a data recording command from the input device 16, the system controller 12 recognizes the start address and end address of the recordable area of the disk 21 based on the TOC information, and selects a recording area based on the recordable area. Then, the servo circuit 11 sends the optical pickup 1 and the recording head 15 to a target recording track to control the rotation speed of the disk 21 to a predetermined value, and the position of an objective lens (not shown) accurately follows the recording track. To be driven.

Then, the analog data is input to an input section (not shown) and sent to the input terminal 19 as analog information. This analog information is converted to digital information by the A / D converter 7b, and then sent to the data expansion / compression circuit 6, where it is time-axis compressed at a predetermined compression rate and sent to the memory controller 4 for shock proofing. It is temporarily stored in the data area of the memory 5.

When a predetermined amount of data is stored in the shock proof memory 5, the memory controller 4
System controller 1 detects that a predetermined amount has been stored.
2 controls the memory controller 4 on the basis of this detection result to read the digital information stored in the data area of the shock proof memory 5 in the order in which they were written, and the read digital information is stored in the signal processing circuit. In 3, the signal is modulated and subjected to predetermined signal processing to become an RF signal,
It is sent to the recording head 15 via the head drive circuit 14 and recorded in the program area of the disk 21 by the interaction with the light from the optical pickup 1. The data recording at this time is performed in units of one cluster.

At this time, the digital information stored in the data area of the shock proof memory 5 and the digital information read from the data area of the shock proof memory 5 by the memory controller 4 have different transfer speeds, and the transfer speed of the shock proof memory 5 is different. It is faster to read from the data area.

When the data amount of digital information stored in the data area of the shock proof memory 5 decreases to a predetermined amount (amount less than one cluster), the system controller 12 causes the memory controller 4 to operate.
Is controlled to stop reading the digital information from the data area of the shock proof memory 5. At this time,
If an analog signal is input from an input section (not shown), the same operation as described above is repeated. If no analog signal is input, it is determined that the data recording is finished, and the system controller 12 After the data is recorded, TOC information including address information and recording date / time information corresponding to each track of the disc 21 is created, included in the link sector of the final cluster and recorded on the disc 21, and the recording operation is stopped.

The system controller 1 responds to the stop of the recording operation before the power of the apparatus is turned off.
2 newly creates the TOC information created above including the character input information, stores the created TOC information in the TOC storage area of the shock proof memory 5, and performs the same signal processing as that performed at the time of data recording. The above process is performed to record in the user TOC area of the disc 21.

The recording operation at this time will be briefly described with reference to the flowchart of FIG.

At step F1, it is confirmed whether the disc 21 is loaded, and if it is loaded, the process proceeds to step F2. Then, the user TOC information is read in step F2, and the process proceeds to step F3. In step F3, storage of the data to be recorded in the program area of the disk 21 in the shock proof memory 5 is started, and the process proceeds to step F4.

In step F4, it is judged whether or not the amount of data stored in the shock proof memory 5 has reached a predetermined amount, and if it has not reached the predetermined amount, this judgment is repeated until it reaches a predetermined amount, and When the number reaches the fixed amount, the process proceeds to step F5, where the data stored in the shock proof memory 5 is recorded in the program area of the disk 21, and the amount of the data in the shock proof memory 5 is less than one cluster. Step F
Moved to 6.

In step F6, it is judged whether or not the data to be recorded in the program area is no longer input. If it is input, the process proceeds to step F3. If it is not input, the data in the program area of the disk 21 is entered. After confirming that the recording is completed, the process proceeds to step F7.

In step F7, the disc 21 after this data is recorded in the program area of the disc 21
Address information corresponding to the program area and the TOC information as recording date and time information are created and included in the link sector of the final cluster, and the process proceeds to step F8, where the final cluster is recorded in the program area of the disk 21. After that, the process proceeds to step F9.

In step F9, the TOC information created in step F7 including the character input information input after recording is created as TOC information and stored in the shock proof memory 5, and the process proceeds to step F10. After the TOC information stored in the proof memory 5 is recorded in the user TOC area of the disc 21, this flowchart is ended.

Thus, at the end of data recording,
The TOC information including the address information and the recording date / time information corresponding to the program area of the disc 21 after the data recording is included in the link sector forming the final cluster of the data to be recorded, and the final cluster is recorded on the disc 21. As a result, when the power supply is cut off before the TOC information corresponding to the program area of the disc 21 after the data recording is separately recorded in the user TOC area of the disc 21, the
When data is damaged in the user TOC area in which OC information is separately recorded, the TO included in the link sector forming the final cluster of the data recorded immediately before is recorded.
By reading the C information, the data recorded in the program area of the disk 21 can be read accurately,
And the TOC corresponding to the program area of the disk 21
Information can be restored.

Next, when the power supply is cut off before the TOC information corresponding to the program area of the disk 21 after data recording is separately recorded in the user TOC area of the disk 21, and in the disk 21
The TOC information restoration operation when data damage occurs in the user TOC area in which OC information is separately recorded will be described.

With the disc loaded,
When there is a TOC information restoration command from the input device 16, the system controller 12 performs an operation of reading and checking the information of the link sector in all clusters on the disk 21, and regarding the information including the TOC information in the reading of the information. Stores the address information of the cluster formed by the link sector including the TOC information and the recording date / time information. Then, the latest recording date / time information is selected by comparing the recording date / time information stored at the time when the check of the link sector is completed in all clusters, and the address information stored in correspondence with the selected recording date / time information select.

Then, the information of the link sector forming the cluster corresponding to the selected address information is read, and the read information is stored in the TOC storage area of the shock proof memory 5 as TOC information. The data recorded in the program area of the disk 21 can be accurately read, and the TOC stored in the TOC storage area of the shock proof memory 5 can be read.
Information is subjected to a predetermined signal processing, and the user T of the disc 21
By recording in the OC area, T on the disk 21
OC information can be restored.

The restoration operation at this time will be briefly described with reference to the flowchart of FIG.

In step F21, it is confirmed whether the disc 21 is loaded, and if it is loaded, the process proceeds to step F22. Then, the user TOC information is read in step F22, and the process proceeds to step F23. Step F
In 23, link in all clusters on the disk 21
The information of the sector is read and the check is started, and the process proceeds to step F24.

In step F24, the information including the TOC information is detected in the reading of the information of the link sector started in step F23, and the address information of the cluster formed by the link sector including the TOC information and the recording date / time information thereof are detected. Is stored and the process proceeds to step F25. In step F25, it is determined whether the link sector check has been completed in all clusters. If it is determined that the check has not been completed, the process proceeds to step F24 and the above check operation is repeated, and it is determined that the check has been completed. The process moves to step F26.

In step F26, the latest recording date / time information is selected by comparing the recording date / time information stored in step F24, the address information stored corresponding to the selected recording date / time information is read, and the process proceeds to step F27. To do.
In step F27, the information of the link sectors forming the cluster corresponding to the address information read in step F26 is read, and the read information is stored as TOC information in the TOC storage area of the shock proof memory 5, and in step F28. Move to step F27
The TOC information in the TOC storage area of the shock proof memory 5 stored in
After the data is recorded in the user TOC area of, the flow chart is ended.

Therefore, since the latest TOC information can be selected by selecting the TOC information included in the link sector based on the recording date / time information, the TOC information corresponding to the program area of the mounted disc can be accurately determined. The TOC information allows the data recorded in the program area of the disk 21 to be accurately read, and the TOC information recorded in the user TOC area of the disk 21 is restored based on the TOC information. can do.

[0054]

As described above, according to the first aspect of the invention, after the control means records the data, the index information corresponding to the recording is created and stored in the storage means, While rewriting the index information stored in the storage means to the index information recorded in the specific area of the recording medium, at the time of recording the data, the control means creates the index information according to the data recording and includes it in the recording data, By recording the recording data including the index information on the recording medium, if the power supply is cut off before the index information for recording the data is recorded in the specific area of the recording medium, or the data is damaged in the specific area portion. Even if a problem occurs, the data on the recording medium can be read by reading the index information included in the recorded data. Index information and can be matched, and it is possible to suppress the incompleteness of the index information in the case of data corruption in the specific area portion occurs. Further, the index information on the recording medium can be restored by rewriting the read index information to the index information recorded in the specific area of the recording medium.

According to the second aspect of the invention, after the control means records the data, index information corresponding to the recording is created and stored in the storage means, and the index information stored in the storage means. While rewriting the index information recorded in a specific area of the recording medium, at the time of data recording, the control means creates index information according to the data recording and includes it in the link sector which is a joint of recording units, By recording the link sector including the index information on the recording medium together with the recording data so that the index information included in the recording data can be read out arbitrarily, the index information related to the data recording is recorded on the recording medium. If the power supply is cut off before recording in the specific area of the In the case where damage occurs even be able to match the data and the index information on the recording medium, it is possible to suppress the incompleteness of the index information. Further, by rewriting the read index information to the index information recorded in the specific area of the recording medium, the index information on the recording medium can be restored and is provided in advance as an area for including the index information. By using the linked sector, the index information can be included in the recording data without particularly modifying the recording data.

According to the third aspect of the invention, when the control means creates the index information according to the data recording at the time of recording the data, the created index information is the address of the reproduction data on the recording medium. By composing information and its recording date and time information,
Since the latest address information of the reproduction data on the recording medium can be selected by comparing the recording date / time information, the index information corresponding to the reproduction data on the recording medium can be read accurately and easily. .

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of a magneto-optical disk device as an information recording / reproducing device which is an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a recorded state of a disc used in the magneto-optical disc device.

FIG. 3 is an explanatory diagram showing a data recording structure of the magneto-optical disk.

FIG. 4 is a flowchart showing a data recording operation of the magneto-optical disk device.

FIG. 5 is a flowchart showing a TOC information restoration operation of the magneto-optical disk device.

[Explanation of symbols]

 1 optical pickup 2 RF amplifier 3 encoder / decoder / signal processing circuit 4 memory controller 5 shock proof memory 6 data expansion / compression circuit 7 converter 8 feed motor 9 spindle motor 10 driver circuit 11 servo control circuit 12 system controller 13 power supply circuit 14 head Drive circuit 15 Recording head 16 Input device 21 Disc

Claims (3)

[Claims] 1. A reading medium for reading the reproduced data and the index information from the recording medium using recording media in which reproduced data and index information for managing the reproduced data are recorded in different areas, respectively, and this reading means. The storage unit stores the index information read by the storage unit, and the control unit that controls the reproduction and recording of the data based on the index information stored in the storage unit. The control unit records the data. In the information recording device, the index information corresponding thereto is created and stored in the storage means, and the index information stored in the storage means is rewritten to the index information recorded in the specific area of the recording medium. The control means is
An information recording / reproducing apparatus characterized in that, when data is recorded, index information corresponding to the data recording is created and included in the recording data, and the recording data is recorded on a recording medium. 2. Playback data over a plurality of tracks,
Using a recording medium in which index information for managing the reproduction data is recorded in different areas and a link sector is provided as a joint between recording units, a reading unit for reading the reproduction data and the index information from the recording medium is provided. A storage means for storing the index information read by the reading means; and a control means for controlling the reproduction and recording of the data based on the index information stored in the storage means. When information is recorded, information recording is performed in which index information corresponding to the information is created and stored in the storage means, and the index information stored in the storage means is rewritten to the index information recorded in the specific area of the recording medium. In the device, the control means is
An information recording / reproducing apparatus, characterized in that, when data is recorded, index information corresponding to the data recording is created and recorded in a link sector which is a joint between the recording units. 3. When recording the data, when the control means creates index information according to the data recording, the index information includes the address information of the reproduction data on the recording medium and the recording date and time information. The information recording / reproducing apparatus according to claim 1 or 2, wherein