JPH06223537A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To improve operability of the device by automatically resetting a truck number and writing it into the user TOC area of a disk after the processing operation. CONSTITUTION:The device is provided with an optical pickup 1, a signal processing circuit 3 to demodulate an RF signal to a digital information, a shock-proof memory 5 to store the digital information, a data extension/ compression circuit 6 to restore the digital information to the original size by extending it, a recording head 15, an input device 16, and a system controller 12 to control these respective devices/circuits. When the joining of musics as the digital information recorded on the disk 21 is instructed by a manual input operation to the input device 16, the truck numbers of the plural consecutive musics are unified by the system controller 12 to rewrite the user TOC area 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 capable of digitizing analog information and recording it on a recording medium such as a magneto-optical disk at a high density.

[0002]

2. Description of the Related Art Conventionally, a technique for digitizing information on a recording medium and recording it at a high density has been developed. As an information reproducing apparatus for reproducing this, for example, digital information such as audio data is pitted on a concentric track. CD players for reproducing compact discs (CDs) formed in rows have been put into practical use. The CD has a recording area for recording digital information (hereinafter referred to as music) and a lead-in area in which information such as the reproduction order of each music is written. Random access to songs is possible.

However, since the CD records the music as a pit row which is a fixed physical unevenness, the lead-in area cannot be rewritten. Therefore,
The conventional CD player cannot have a function of performing a processing operation that requires rewriting of the lead-in area of the CD, such as joining pieces of music recorded on the CD.

Therefore, in order to eliminate the above-mentioned inconvenience,
For example, an information recording / reproducing apparatus has been proposed which has a recording / reproducing disc such as a magneto-optical disc as a recording medium and has a function of performing a processing operation that requires rewriting of the recording medium, such as joining of songs. There is.

[0005]

However, when the above-described processing operation is performed, the above-mentioned conventional information recording / reproducing apparatus is arranged so that a plurality of songs recorded on the recording medium can be continuously read. There is a problem that, for example, the user of the apparatus has to manually reset the reproduction order and write it in the recording medium each time.

[0006]

In order to solve the above-mentioned problems, the information recording / reproducing apparatus of the present invention according to claim 1 of the present invention individually completes the data which has been time-axis compressed at a predetermined compression rate. Using a recording medium having a recording area for recording as a plurality of data groups, an optical pickup for reading data from the recording medium, a recording head for recording data on the recording medium, and a control for controlling the optical pickup and the recording head. In the information recording / reproducing apparatus including means, a plurality of data groups recorded on the recording medium are provided with a selection means capable of manually and arbitrarily selecting two or more continuous data groups, and When two or more consecutive data groups are selected by the selecting means by the control means of, the data groups are connected to each other to form one complete data group. It is characterized in that read from the recording medium as a.

In order to solve the above-mentioned problems, the information recording / reproducing apparatus according to the second aspect of the present invention makes the time-axis-compressed data at a predetermined compression rate into a plurality of individually completed data groups. An optical pickup that uses a recording medium having a recording area for recording and a writing area in which the reproduction order of the data group can be written, and an optical pickup that reads the data and the reproduction order from the recording medium and the data and the reproduction order in the recording medium In an information recording / reproducing apparatus including a recording head for recording and a control means for controlling the optical pickup and the recording head, two or more continuous data of a plurality of data groups recorded on the recording medium When a group is provided with a selection means that can be arbitrarily selected manually, and two or more consecutive data groups are selected by the selection means by the control means. Is a method of connecting these data groups to each other and reading them from the recording medium as one complete data, while resetting the reproduction order so that a plurality of data groups recorded on the recording medium are continuously reproduced. This reproduction order is recorded in the writing area of the recording medium.

[0008]

According to the structure of claim 1, when two or more continuous data groups are manually selected by the selecting means from the plurality of data groups recorded on the recording medium,
The control means connects these data groups to each other and reads them from the recording medium as one complete data.

Thus, for example, when a processing operation such as joining of the data groups recorded in the recording medium is performed, the data groups desired to be joined are linked to each other,
It is possible to read from the recording medium as one complete data. Therefore, the operability of the information recording / reproducing apparatus is improved.

According to the structure described in claim 2, when two or more continuous data groups among the plurality of data groups recorded on the recording medium are manually selected by the selection means, the control means While these data groups are connected to each other and read out from the recording medium as one complete data, the reproduction order is reset so that a plurality of data groups recorded on the recording medium are continuously reproduced, and this reproduction is performed. The sequence is recorded in the writing area of the recording medium.

Thus, for example, when a processing operation such as joining of the data groups recorded on the recording medium is performed, the data groups desired to be joined are linked to each other,
It is possible to read from the recording medium as one complete data. Further, for example, when performing a processing operation such as connecting the data groups, the reproduction order is automatically reset so that the plurality of data groups recorded in the recording medium are continuously reproduced. It is possible to record in the writing area of the recording medium. Therefore, the operability of the information recording / reproducing apparatus is improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a magneto-optical disk device will be described below with reference to FIGS.

A magneto-optical disk device as an information recording / reproducing apparatus according to this embodiment is adapted to digitize and record analog information such as audio data on a magneto-optical disk. As shown in FIG. 1, such a magneto-optical disk device includes an optical pickup 1, an RF amplifier 2, an encoder / decoder / signal processing circuit 3, a memory controller 4, a shock proof memory 5, and a data decompression / decompression device. The compression circuit 6, the converter 7, the feed motor 8, the spindle motor 9, the driver circuit 10, the servo control circuit 11, the system controller 12, and the power supply circuit 1
3, a head driving device 14, a recording head 15, and an input device 16.

To explain the reproducing operation, the optical pickup 1 is a reproducing head which irradiates a disk 21 as a recordable / reproducible recording medium with light and takes in reflected light from the disk 21, and is recorded on the disk 21. It is designed to read RF signals. 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. Further, the RF amplifier 2 is adapted to generate servo control signals such as a focus error signal and a tracking error signal from the RF signal and send them to the servo control circuit 11. An encoder / decoder / signal processing circuit (hereinafter, referred to as a signal processing circuit) 3 is provided so as to be communicable with the system controller 12 for processing subcodes and the like, and demodulates the RF signal that has passed through the RF amplifier 2. The digital information is converted into digital information, the digital information is subjected to predetermined processing such as error correction, and the digital information is transferred to the memory controller 4.

The memory controller 4 includes a signal processing circuit 3
According to an instruction from the system controller 12, the writing operation and the reading operation of the shock proof memory 5 are controlled 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, for example, a 1 Mbit DRAM (Dynami).
A semiconductor memory such as c Random Access Memory) is suitable. The shock proof memory 5 includes a signal processing circuit 3
And the data expansion / compression circuit 6 to protect digital information in order to prevent interruption of recording / reproduction due to disturbance such as vibration, and digital information output from the signal processing circuit 3. It is provided for the purpose of absorbing the difference between the transfer rate of the digital data and the transfer rate of the digital information input to the data expansion / compression circuit 6.

The data decompression / compression circuit 6 outputs from the memory controller 4 time-compressed the digital information which has been time-compressed at a predetermined compression rate and time-decompresses the digital information of the converter 7.
The data is transferred to the A converter 7a, reproduced to the original analog information here, 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 is a motor for moving the optical pickup 1 in a direction orthogonal to a recording track (not shown) of the disk 21. 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
It is a circuit that feedback-controls each of the above-described devices driven by the driver circuit 10 so that the operation of causing the light emitted from the optical disc to follow the 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 signal processing circuit 3, a memory controller 4, a servo control circuit 11, a power supply circuit 13, and a head drive device 14.
It is a microcomputer that centrally manages. The input device (selection means) 16 is composed of a switch, a key, and the like (not shown). For example, after the switch is turned on to enable input, it is recorded on the disk 21 by a manual input operation using a keyboard or the like. A processing operation of selecting two or more continuous data groups from a plurality of individually completed digital information (hereinafter referred to as a data group) and connecting these data groups to each other to form one complete data. Is input to the system controller 12. Then, the system controller 12
Based on the processing operation input from the input device 16, the above devices and circuits are controlled so that a plurality of data groups recorded in the disk 21 and desired to be connected are read out as one data. Head drive device 1
The address data in the writing area of the disk 21 is rewritten via the recording head 4 and the recording head 15 as described later.

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 system controller 12, the servo control circuit 11, the head drive device 14, and the like.

The recording operation will be described. Input terminal 1
Reference numeral 9 is connected to an input unit (not shown) having a microphone or the like, and the A / D converter 7b converts the analog information input from the input terminal 19 into digital information and transfers it to the data expansion / compression circuit 6. Has become. The data expansion / compression circuit 6 uses the time axis of the digital information output from the A / D converter 7b as a predetermined compression rate, for example, about 1 /.
It is compressed to 5 and transferred to the memory controller 4. The memory controller 4 transfers the digital information output from the data expansion / compression circuit 6 to the shock proof memory 5, and transfers the digital information output from the shock proof memory 5 to the signal processing circuit 3. . Therefore, the shock proof memory 5 also aims to absorb the difference between the transfer speed of the digital information output from the data expansion / compression circuit 6 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 reproduction order of the data group in the writing area of the disk 21.

In the above structure, the RF signal is read from the disk 21 by the optical pickup 1 during reproduction. 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 control 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 drive device for the objective lens 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 information sent to the memory controller 4 is written in the shock proof memory 5 and temporarily stored therein, and is read out to the memory controller 4 in the order in which it was written. 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, 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. The data is temporarily stored in the memory 5 and read out to the memory controller 4 in the order of writing. And
The digital information sent to the memory controller 4 is
The signal processing circuit 3 performs the modulation and the predetermined signal processing to perform the RF.
The recording head 1 via the head drive device 14 as a signal.
5 and is recorded in the recording area of the disc 21 by the interaction with the light from the optical pickup 1.

Next, the disk 21 used in the magneto-optical disk device having the above structure will be described. Disk 21
Is a user TOC (Table of the Table of Contents as a write-in area for writing the reproduction order of a plurality of recorded data groups, in order from the inner circumference side to the outer circumference side. Contents) area and multiple
And a recording area for recording individually completed data groups.

In the user TOC area, a plurality of individually completed data groups in the format shown in FIG. 2, for example, the reproduction order of a plurality of music programs (hereinafter referred to as music) are recorded. In the figure, the play track number PTNO.n (where n = 1, 2, ...) Is an area indicating the position where the address data A, B ,. In, a value indicating the first address and the last address of the recording position of the n-th music in the recording area (hereinafter referred to as the start address SA and the end address EA, respectively) is written. still,
Address data A corresponds to play track number PTNO.1.
Address data B, C, ... Corresponds to O.2, PTNO.3 ,. In the user TOC area,
A user can write information about a plurality of recorded data groups.

In the above structure, when the magneto-optical disk device reads the play track number PTNO.1 by the optical pickup 1, the address data A is read next, and the start address S of this address data A is read.
After moving to the address indicated by A and starting the reproduction of the first piece of music, when the address indicated by the end address EA is reproduced, the play track number PTNO.2 is subsequently read and the second piece of music is reproduced in the same manner. . Therefore, for example, the address of the track number TNO.n of each song is shown in FIG.
As shown in (a), the address data A,
If B, ... Are as shown in FIG. 5 (a), the magneto-optical disk device is the first song → the second song → the third song → the fourth song → 5.
Play in the order of the songs.

Next, the processing operation of joining music pieces in this magneto-optical disk device will be described. First, after turning on a switch (not shown) of the input device 16 to enable input, two or more continuous music pieces are selected from each music piece by a manual input operation using a keyboard or the like, and these music pieces are connected to each other to form a single piece. Instruct a processing operation to be a song. Then,
The system controller 12 controls the user TOC of the disk 21 via the head drive device 14 and the recording head 15.
The area is rewritten, and the address data of a plurality of pieces of music that are instructed to be joined together. That is, as shown in FIG. 3A, for example, when an instruction is made to connect the N−1th music and the Nth music of the disk 21, the system controller 12 causes the connection as shown in FIG. 3B. The track numbers TNO.n of the N-1st and Nth songs desired to be combined into one, and the track numbers TNO.N-1 and TNO.N are combined.
To TNO. N-1 and write the address data to the corresponding position. Further, the track numbers TNO.n from TNO.N + 1, ... to TNO.N, ... are set so that the track numbers TNO.n after the N + 1th song in FIG.
((B) in the figure).

Specifically, FIG. 4A and FIG. 5A
As shown in FIG. 4, for example, when the input operation to the input device 16 is instructed to connect the third music and the fourth music of the disk 21 in which the five music is recorded, the system controller 12 causes the system controller 12 to operate as shown in FIG. As shown in FIG. 5B, the track numbers TNO.3 and TNO.4 of the third and fourth songs are combined into one, TNO.3, and the address data is written in the corresponding position.

Also, the track numbers of the fifth song in FIG. 4A are set so that the track numbers TNO.n are continuous.
TNO.n is changed from TNO.5 to TNO.4 (Fig. 4 (b)), and the address data is rewritten to the corresponding position. At this time,
For example, if the start address SA of the third song in FIG. 4 (a) is 26 and the end address EA of the fourth song is 52, the start address SA of the joined song having the track number TNO.3 in FIG. 4 (b). Is 26 and the end address EA is 52. Therefore, on the disc 21, each music piece is reproduced in the order of the first music piece → the second music piece → the third music piece (combined music piece) → the fourth music piece (previous fifth music piece) from the next reproduction.

In the above description, the case where two consecutive songs are joined is shown as an example. However, the number of songs to be joined is not limited to two, and three or more consecutive songs are joined into one song. May be combined. The number of songs recorded on the disc 21 is not limited to the above five songs.

As described above, the present magneto-optical disk device is
When an instruction is issued to perform a process of joining music pieces recorded on the disk 21 by a manual input operation to the input device 16 including a switch and a key, the system controller 1
2 rewrites the track number TNO.n and the address data A, B, ... That are recorded in the user TOC area of the disk 21 via the head drive device 14 and the recording head 15.

That is, when the above processing operation is performed, it is possible to connect a plurality of pieces of music desired to be connected to each other and read them from the disk 21 as one completed piece of music. Also, by the system controller 12,
It is possible to automatically reset the track numbers TNO.n of the respective songs so that they are continuous, and write the reset track numbers TNO.n to the user TOC area of the disk 21 via the recording head 15. Therefore, the operability of the magneto-optical disk device is improved.

[0037]

As described above, the information recording / reproducing apparatus according to the first aspect of the present invention manually selects two or more continuous data groups from the plurality of data groups recorded on the recording medium. And a control means for selecting two or more continuous data groups by the control means, the data groups are connected to each other to form one complete data recording medium. It is a configuration to read from.

Thus, for example, when a processing operation such as joining of the data groups recorded on the recording medium is performed, the data groups desired to be joined are linked to each other,
It is possible to read from the recording medium as one complete data. Therefore, the operability of the information recording / reproducing apparatus is improved.

As described above, the information recording / reproducing apparatus according to the second aspect of the present invention manually and arbitrarily selects two or more continuous data groups from the plurality of data groups recorded on the recording medium. In addition to providing possible selection means, when the control means selects two or more continuous data groups, the data groups are connected to each other,
While reading from the recording medium as one complete data, the reproduction order is reset so that a plurality of data groups recorded on the recording medium are continuously reproduced, and the reproduction order is set to the writing area of the recording medium. It is configured to be recorded in.

Thus, for example, when a processing operation such as joining of the data groups recorded in the recording medium is performed, the data groups desired to be joined are linked to each other,
It is possible to read from the recording medium as one complete data. Further, for example, when performing a processing operation such as connecting the data groups, the reproduction order is automatically reset so that the plurality of data groups recorded in the recording medium are continuously reproduced. It is possible to record in the writing area of the recording medium. Therefore, the operability of the information recording / reproducing apparatus is improved.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a user TOC area of a disc used in the above magneto-optical disc device.

FIG. 3 is an explanatory diagram showing how the track number of a user TOC area of a disc is changed by the magneto-optical disc device.

FIG. 4 is an explanatory diagram showing how the user TOC area of the disc is rewritten by the magneto-optical disc device.

FIG. 5 is an explanatory diagram showing how the address of the user TOC area of the disc is rewritten by the magneto-optical disc 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 12 System Controller (Control Means) 14 Head Driving Device 15 Recording Head 16 Input Device (Selection Means) 21 Disc (recording medium)

Claims (2)

[Claims] 1. An optical pickup which uses a recording medium having a recording area for recording time-compressed data at a predetermined compression rate as a plurality of individually completed data groups, and an optical pickup which reads data from the recording medium.
In an information recording / reproducing apparatus comprising a recording head for recording data on the recording medium and a control means for controlling the optical pickup and the recording head, among a plurality of data groups recorded on the recording medium,
In addition to having a selecting means that can manually and arbitrarily select two or more continuous data groups, when two or more continuous data groups are selected by the selecting means by the control means, these data groups are selected. An information recording / reproducing apparatus characterized in that the data are connected to each other and read out from the recording medium as one complete data. 2. A recording having a recording area for recording data compressed on a time axis at a predetermined compression rate as a plurality of individually completed data groups, and a writing area in which a reproduction order of the data groups can be written. Information that includes an optical pickup that uses a medium to read data and a reproduction order from the recording medium, a recording head that records the data and the reproduction order on the recording medium, and a control unit that controls the optical pickup and the recording head. In the recording / reproducing apparatus, among the plurality of data groups recorded on the recording medium,
In addition to having a selecting means that can manually and arbitrarily select two or more continuous data groups, when two or more continuous data groups are selected by the selecting means by the control means, these data groups are selected. Are read from the recording medium as one complete data, and the reproduction order is reset so that a plurality of data groups recorded on the recording medium are continuously reproduced, and the reproduction order is recorded. An information recording / reproducing apparatus characterized by recording in a writing area of a medium.