JPS6331071A - Optical disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To rapidly reproduce address data in a driving block concerning respective recording sections and to smoothly execute an action without fail by providing an address data reproducing part reproducing the address data to reproduce the address data stuck to a writable optical disk at a driving block. CONSTITUTION:In accordance with the fact that flag data recorded to a flag recording part F are read, based upon a detecting output signal Pd, from signal forming parts 51a and 51b, a reading signal Si is obtained concerning the flag data. The reading signal Si is processed in address/flag data reproducing parts 57a and 57b supplied directly and thus, the flag data are reproduced. Namely, the reproducing output of the flag data written to a sector selected in a magneto-optical disk 11 is obtained as reproducing flag data Df from address/ flag data reproducing parts 57a and 27b provided at a driving block BD, and obtained reproducing flag data Df are supplied to a controller 59 to be used for an action control.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Field of industrial application B. Outline of the invention C. Prior art D. Problems to be solved by the invention E. Means for solving the problems F. Effects G. Example G-1 Drive block (Figs. 1 to 3 ) G-2 Control block (Figures 1 to 3) G-3 Reproduction of each data (Figure 1) G-4 Usage example (Figure 4) H Effect of the invention A Industrial application field of the present invention The present invention relates to an optical disc recording and reproducing apparatus that records and reproduces information using an optical disc on which data can be written and read.

B. Summary of the Invention The present invention uses an optical disc (hereinafter referred to as a writable optical disc) in which data can be written to and read from a recording section specified by address data, and through the operation of writing data to the recording section. In an optical disk recording and reproducing device that records information and also reproduces information through the operation of reading the data written in the recording section, the entire writable optical disk is rotated and a light beam is incident on it to record information. a drive block that writes data to or reads data from the recording section, detects a light beam passing through the writable optical disk and forms a read signal based on the detected output; a recording signal supply operation that supplies a recording signal corresponding to data to be read to the drive block, and a data reproduction operation that receives a read signal from the drive block and obtains a reproduction output of the data read from the recording section of the writable optical disk. and a control block that controls the operation of the drive block in addition to these recording signal supply operations and data reproduction operations. By including a playback unit, when writing data to or reading data from a recording section of a writable optical disc,
This system allows the address data for each recording category to be quickly reproduced, and various operations that are performed using the address data that specifies each recording category to be carried out reliably and smoothly. be.

C. Conventional Technology Among the writable optical disks used as information recording media, there is one that is usually called a magneto-optical disk, on which data can be repeatedly written and erased. Such a magneto-optical disk has a structure in which a perpendicular magnetization film forming a recording layer is provided on the surface of a substrate, and the perpendicular magnetization film is further covered with a protective layer, and the entire disc is formed into a disk shape. be treated as a gift.

Then, data is erased and new data is written to record information, and written data is read to reproduce information.

When erasing data and writing new data to such a magneto-optical disk, the magneto-optical disk is rotated at a predetermined rotational speed around its center, and a predetermined external magnetic field is applied. A laser beam is made incident on the perpendicularly magnetized film under pressure, and the portion of the perpendicularly magnetized film that receives the laser beam changes its magnetization direction according to the direction of the external magnetic field as the temperature rises. shall be deemed to have. Then, data is erased by uniformly aligning the magnetization direction of the perpendicularly magnetized film by the incidence of a laser beam under the action of an external magnetic field, and the magnetization direction reversal region is formed in a predetermined pattern. Data is written by being formed. On the other hand, when reading data written on a magneto-optical disk, a laser beam with a lower power than that used during erasing and writing data is made incident on the perpendicularly magnetized film, and the laser beam is reflected from the perpendicularly magnetized film. The laser beam is detected by a photodetector, and a read signal corresponding to data written on the magneto-optical disk is obtained from the photodetector. When reading this data, the reflected laser beam from the perpendicularly magnetized film rotates the plane of polarization according to the magnetization direction reversal pattern in the perpendicularly magnetized film corresponding to the written data based on the Kerr effect. Become something. Such rotation of the plane of polarization is then detected, for example, by separately detecting and comparing each of the orthogonal polarization components of the reflected laser light beam, such that the rotation has a change in accordance with the rotation of the plane of polarization. A read signal is formed based on the output.

In a magneto-optical disk on which data is written, erased, and read in this way, a large number of annular recording tracks surrounding the center of the perpendicularly magnetized film are formed, and each annular The recording track is divided into a plurality of sectors each having an address/data section at the start end, and each recording trunk is scanned by a laser beam while being rotated at a predetermined rotational speed. Data is written and read. For this reason, a disk recording/reproducing device that records information on a magneto-optical disk and reproduces information from the magneto-optical disk includes a disk drive section that rotationally drives the magneto-optical disk, and a magnetic field generation section that applies a predetermined external magnetic field to the magneto-optical disk. , an optical head section that makes the laser beam enter the annular recording track of the magneto-optical disk mounted on the disk drive section, and a light receiving section that detects the reflected laser beam from the annular recording track of the magneto-optical disk and forms a read signal. , a recording signal supply section that supplies a recording signal corresponding to the data to be written, a data reproduction section that receives a read signal from the light receiving section and obtains a reproduction output of the data read from the sector, and an operation that controls the operation of each section. It is assumed that the controller is equipped with a control unit and the like.

When such a disk recording/reproducing device writes data on a magneto-optical disk in units of sectors, information is usually written in the form of digital data to each sector. There is a possibility that the digital data may contain errors that cannot be corrected by the error correction processing performed during information reproduction, and therefore, it may not be possible to obtain a proper read signal.

Therefore, a spare sector is prepared at a predetermined position on the magneto-optical disk, which is separate from the sector in which digital data is normally written, and digital data can be written in sector units on the magneto-optical disk. To do this, after writing digital data to the sector, verify the digital data written to the sector, and if it is determined that a proper read signal cannot be obtained, the The same digital data as the digital data written to the sector is written to the replacement sector, and when reproducing information, the replacement sector is used in place of the read signal from the sector in which the digital data was not written properly. It has been considered to perform defective sector replacement processing in which a read signal from a sector is used.

For magneto-optical disks on which defective sector replacement processing is performed, each sector is provided with an address/data section at the starting end, and the main data is written following the address/data section. The area is arranged,
Further, following the data recording area, a flag recording section is arranged in which flag data indicating the state of the main data written in the data recording area, the address of the related replacement sector, etc. is written. Ru. When data is written to the magneto-optical disk with defective sector replacement processing, the address and data are read from the address and data section in each sector, the main data is written to the data recording area, and , flag data is written to the flag recording section.

D Problems that the invention attempts to solve As mentioned above, each sector is an address/data section.

A magneto-optical disk is used that has a data recording area and a flag recording area, and when data is written or read in sector units by a conventional disk recording/reproducing device, an address/magnetic disk is used.
The address data in the data section and the flag data in the flag recording section are recorded or written using a recording signal modulated after the same modulation method as the main data in the data recording area,
In addition, the address data, main data, and flag data recorded or written in the address data section, data recording area, and flag recording section, respectively, are read by a data reproducing section that includes a common decoder. By being processed, it can be reproduced. In such a case, the address data and flag data usually have a relatively complicated data format, and therefore, when reproduced by a data reproducing unit that includes a decoder common to the main data, a predetermined format is required. It will take time. Therefore, it is difficult to quickly obtain reproduction address data or reproduction flag data, and as a result, processing operations cannot be performed smoothly, for example, when the above-mentioned defective sector replacement processing is performed. This is causing an inconvenience.

In addition, a disk recording and reproducing device that records and reproduces information using a magneto-optical disk is a device that rotates a magneto-optical disk, makes a laser beam incident on the magneto-optical disk, and uses a laser beam reflected from the magneto-optical disk. A drive block that mainly performs the operation of detecting and controlling the laser beam incident on the magneto-optical disk, the formation and supply of recording signals corresponding to the data to be written on the magneto-optical disk, and the reflection from the magneto-optical disk. It is divided into a control block that mainly performs data reproduction based on the detection output obtained by detecting a laser beam, and operation control of each part including the drive block, and one control block has multiple blocks. It is often used with a drive block connected to it. In such a case, the read signal obtained by reading address data or flag data from the magneto-optical disk in each of the plurality of drive blocks is transmitted to the data reproducing section including the decoder arranged in one control block. Since the read address data or flag data associated with each driving block is obtained through processing, the read address data or read flag data cannot be obtained quickly, resulting in various operations being delayed. In addition to the inconvenience of not being able to perform the process smoothly, there is also the problem that the configuration for making connections between each drive block and the control block becomes extremely complicated.

In view of the above, the present invention makes it possible to make a light beam incident on a rotatably driven writable optical disc, and to write data on the writable optical disc and read the written data. When writing data to or reading data from each of a large number of recording sections specified by address data on a writable optical disc, it is possible to quickly reproduce the address data for each recording section. It is an object of the present invention to provide an optical disc recording and reproducing apparatus that can smoothly perform various operations using reproduction address data.

E. Means for Solving the Problems In order to achieve the above-mentioned object, the optical disc recording and reproducing apparatus according to the present invention is broadly divided into a drive block and a control block. The drive block includes a disk drive section that rotationally drives the writable optical disk, and a drive block that makes the light beam incident on the writable optical disk that is rotationally driven by the disk drive section and drives the writable optical disk that is rotationally driven by the disk drive section. an optical head unit that detects the optical beam that has passed through the writable optical disc; and an optical head unit that performs writing or reading of main data into a recording section specified by address data on the writable optical disc, using the optical head unit that makes the optical beam incident on the writable optical disc. a signal forming section that forms a read signal based on the detection output obtained when the optical head detects the light beam that has passed through the four-speed capable optical disk; and a signal forming section that forms a read signal based on the output of the signal forming section; - The control block is configured to include an address/data reproducing section for obtaining data, and a recording signal supply section and a signal forming section that supply a recording signal corresponding to the main data to be written to the light beam control section. a main data reproducing section which receives an output from the section and receives a reproduction output of main data read from a recording section on the writable optical disk, and controls the respective operations of the recording signal supply section, the main data reproducing section, and the drive block. It can be configured to include an operation control section.

F Effect In the optical disc recording and reproducing apparatus according to the present invention configured as described above, a light beam from the optical head unit is incident on the writable optical disc that is mounted on the disc drive unit and rotated at a predetermined rotational speed. Then, data is written to and read from each recording section specified by the address data on the writable optical disc.

When data is written to or read from each recording section, the light beam from the optical head section drives the disk in the drive block under the control of the operation control section disposed in the control block. The light beam is made incident on a writable optical disc which is rotationally driven by a light beam controller, and is controlled by a light beam controller to read address data from a recording section on the writable optical disc. The output from the signal forming section obtained thereby is supplied to the address/data reproducing section provided in the drive block separately from the main data reproducing section arranged in the control block, and is directly transmitted from the address/data reproducing section. Reproduction address data is obtained. In addition, the output from the signal forming unit obtained by reading the main data written in the recording section of the writable optical disc is supplied to the main data reproducing unit provided by Control Block Co., Ltd. A playback output of the main data can be obtained.

Note that if the above-mentioned flag data is also written in the recording section of the writable optical disk, the drive block is also provided with an output from the signal forming section obtained by reading the flag data. address/
The data is supplied to the data reproducing section so that the reproducing flag data can be obtained from the address/data reproducing section.

In this way, when data is written to or read from a recording section on a writable optical disc, the address data and flag data for each recording section are driven by the output from the signal forming section. By being processed and reproduced by the address/data reproducing unit provided in the block, the reproduced address data and furthermore the reproduced flag data are
This can be quickly obtained without involving data regeneration operations performed in the control block. Therefore, operations such as the above-mentioned defective sector replacement process, which is performed using address data specifying each recording section, can be performed reliably and smoothly.

Furthermore, by providing the address/data reproducing unit in the drive block, even when a plurality of drive blocks are connected to and used for one control block, the information related to each drive block can be Reproduction address data and further flag data can be quickly obtained, and the configuration for connecting each drive block and control block is simplified.

G. Embodiment FIGS. 1 and 2 schematically show an example of an optical disc recording/reproducing apparatus according to the present invention. In this example, the entire block is divided into a drive block BD and a control block BC, and a magneto-optical disk is used as the writable optical disk.

G-1 Drive block (Figures 1 to 3) Drive block B
D is provided with a disk mounting portion 13 in the shape of a circular trapezoid, as shown by the dashed line in FIGS. .

The disk mounting section 13 is rotatable about its central axis as a rotation axis, and is rotated by a motor 15 at a predetermined rotational speed. The disk mounting section 13 and the motor 15 form a disk drive section that rotates the magneto-optical disk 11 mounted on the disk mounting section 13 at a predetermined rotational speed.

The magneto-optical disk 11 has a recording track forming area 11 thereof.
A large number of concentric annular recording tracks surrounding the center of the perpendicularly magnetized film portion at a are formed, and
Each annular recording track is divided into a plurality of sectors. For example, as shown in FIG. 3A, one annular recording track is made up of 88 sectors Q, -QSS. For example, as shown in FIG. 3B, each sector has an address/data area AD arranged at its starting end, and a data recording area with a space Ef of a predetermined width in the address/data area AD. Continuing from the DTM, a flag recording section F, which continues from the data recording area DT with a space section Er of a predetermined width, is arranged on the rear end side.

In the address/data area AD, address data specifying each sector is recorded in a pit arrangement when the magneto-optical disk 11 is created, and the data recording area DT that follows through the space area Ef is a perpendicular magnetized area. This is a portion where a magnetization pattern in the film is formed and main data is written and the written main data is erased. In addition, in the flag recording section F, for example, flag data related to the write state of main data in the data recording area DT is written with a magnetization pattern formed in the perpendicular magnetization film, and main data is written. The flag data that has been set is erased. Note that the address data in the address/data area AD, the flag data in the flag recording area F, and the main data in the data recording area DT are respectively recorded with recording signals modulated using different modulation methods. For example, the FM method is applied to address data and flag data,
Furthermore, the NRZI method is applied to the main data.

The disks are placed directly above the magneto-optical disk 11 mounted on the disk mounting section 13, and are opposed to each other with the position directly above the disk mounting section 13, and therefore directly above the center of the magneto-optical disk 11, sandwiched therebetween. , each of which is a magneto-optical disk 1
A pair of magnets 17a and 1 extend parallel to the recording trunk forming area 11a of the magneto-optical disk 11 from the inner peripheral edge to the outer peripheral edge in the radial direction of the magneto-optical disk 11.
7b is fixedly arranged. Each of these magnets 17a and 17b is formed into a rectangular plate shape having a predetermined width in a direction orthogonal to the radial direction of the magneto-optical disk 11, as shown in FIG. For example, the magnet 17a has a magnetic pole arrangement in which the surface facing the magneto-optical disk 11, that is, the bottom surface thereof, is the north pole side and the top surface side is the south pole side. , the magnetic pole arrangement is such that the surface facing the magneto-optical disk 11, that is, the lower surface side is the south pole side, and the upper surface side is the north pole side.

Further, below the magneto-optical disk 11 mounted on the disk mounting section 13, a pair of optical head sections 19a and 19b are arranged, which face each other with the magneto-optical disk 11 sandwiched between magnets 17a and 17b, respectively. . Each of the optical head units 19a and 19b includes a laser beam generating unit and a photodetecting unit that generate a writing and erasing light beam and a reading light beam, and each of the optical head units 19a and 19b has a built-in laser light generating unit and a light detection unit that generate a writing and erasing light beam and a reading light beam, and each of the optical head units 19a and 19b has a built-in laser light generating unit and a photodetecting unit that generate a writing and erasing light beam and a reading light beam, and each of the optical head units 19a and 19b has a built-in laser light generating unit and a photodetecting unit that generate a writing and erasing light beam and a reading light beam.
The magneto-optical disk 11 has disk facing portions 20a and 20b facing each other, and is positioned opposite to each other with the central portion of the magneto-optical disk 11 in between. The recording and erasing light beams and the reading light beams obtained from the laser light generating units built in the optical head units 19a and 19b are applied to the recording tracks of the magneto-optical disk 11 at the ends of the disk facing portions 20a and 20b. The recording track forming area 1 of the magneto-optical disk 11 is incident on the forming area 11a.
It contains an objective lens designed to receive the reflected light beam from the disk facing portions 20a and 2.
The reflected light beam received by the objective lens built in each of the optical heads 19a and 19b is guided to a photodetector built in each of the optical head parts 19a and 19b. These optical head parts 19a and 19b have magnets 17a and 1, respectively.
7b, in the radial direction of the magneto-optical disk 11, the recording trunk forming area 1 of the magneto-optical disk 11
1a, each of which is supported by guide members 21a and 21b consisting of a pair of bars extending from the inner peripheral edge to the outer peripheral edge as shown in FIG. At the same time, it is possible to move in the radial direction of the magneto-optical disk 11 by being guided by them.

Head drive units 23a and 23b are provided for the optical head units 19a and 19b, respectively.
a and 19b are synchronously moved along guide members 21a and 21b so as to move them closer to or farther apart from each other. That is, the optical head sections 19a and 19b are driven by the head drive sections 23a and 23b while being guided by the guide members 21a and 21b, and mutually move in the radial direction of the magneto-optical disk 11 mounted on the disk mounting section 13. The guide members 21a and 21b and the head drive units 23a and 23b form a head drive mechanism. In addition, a tracking control section 25a, a focus control section 27a, a tracking control section 25b, and a focus control section are provided for disk facing portions 20a and 20b, each of which has a built-in objective lens, of the optical head sections 19a and 19b. A tracking control section 25a and a focus control section 27 are provided.
a, and the tracking control section 25b and focus control section 27b are located at the disk facing portions 20a and 20b, respectively.
From the recording trunk forming area 11a of the magneto-optical disk 11
The writing and erasing light beam and the reading light beam are controlled to be incident on the annular recording track so that their respective incident positions are properly positioned on the annular recording track, and their focusing state is appropriate.

In this way, the optical head sections 19≦ and 19b are driven by the head drive sections 23a and 23b, and the tracking control section 25a and the focus control section 27a, and the tracking control section 25b and the focus control section 27b are driven.
is activated, the writing and erasing light beams and the reading light beams are incident on the recording trunk forming area 11a of the magneto-optical disk 11 from the disk-facing portions 20a and 20b of the optical heads 19a and 19b, respectively. Each of them is assumed to reach the same circumference of a large number of concentric recording tracks formed in the perpendicularly magnetized film portion in the recording track forming region 11a with an appropriate focusing state.

Furthermore, in relation to the optical head parts 19a and 19b, light beam control parts 49a and 49b and a signal forming part 51
a and 51b are provided.

The light beam control section 49a supplies a drive signal Qw for writing and erasing light beams and a drive signal Qr for reading light beams to a laser light generation section built in the optical head section 19a. The control section 49b controls the optical head section 1
A drive signal Qw for writing and erasing light beams and a drive signal Qr for reading light beams are supplied to a laser light generating section built in 9b. Light beam controllers 49a and 49b
A recording modulation signal Sm, which is sent from the control block BC and is a signal corresponding to data to be written or a predetermined erasing signal, is selectively supplied via a switch 53. And the light beam controllers 49a and 49
The drive signal QW for the writing and erasing light beams b supplied to the laser light generating sections built in the optical head sections 19a and 19b, respectively, is formed in accordance with the recording modulation signal Sm.

The signal forming section 51a receives a detection output signal Pd obtained according to a change in the reflected light beam from the recording track forming area 11a of the magneto-optical disk 11 by a light detecting section built in the optical head section 19a, and outputs a detection output signal Pd to the detected output signal Pd obtained according to a change in the reflected light beam from the recording track forming area 11a of the magneto-optical disk 11. Based on the data recording area DT in each sector of the magneto-optical disk 11
Read signal Si for main data read from or flag data read from flag recording section F, address/data section AD in each sector
A read address data signal Ad that is a read output for address data read from.

The signal forming section 51'b generates a tracking error signal St and a focus error signal Sf, and the signal forming section 51'b detects the signal from the recording track forming area Lla of the magneto-optical disk 11 using a light detecting section built in the optical head section 19b. A detection output signal Pd obtained in response to a change in the reflected light beam is received, and a read signal Si and a read address/data signal Ad are generated based on the detected output signal Pd.

A tracking error signal St and a focus error signal sr are formed. These signal forming parts 51a and 51
Each of the read signals Si obtained from the drive block BD is selectively supplied to the control block BC via the switch 55, and is also supplied to the address/flag data reproducing units 57a and 57b provided in the drive block BD. . Also,
The read address/data signals Ad obtained from the signal forming sections 51a and 51b are supplied to address/flag data reproducing sections 57a and 57b, respectively, and are further supplied to a tracking error signal St and a focus error signal Sr.
are supplied to tracking control units 25a and 25b and focus control units 27a and 27b, respectively.

When each of the address/flag data reproducing sections 57a and 57b receives the read address data signal Ad, it reproduces the address data recorded in the address data section AD in each sector based on the read address data signal Ad,
The reproduction address data Da is obtained and supplied to a controller 59 provided in the drive block BD. Further, address/flag data reproducing sections 57a and 57b
When the read signal Si regarding the flag data is supplied to the address/flag data reproducing section 57.
Each of a and 57b reproduces the flag data written in the flag recording section F in each sector based on the read signal Si for flag data, obtains reproduced flag data Dr, and transmits it to the controller 5.
Supply to 9.

The controller 59 is supplied with reproduction address data Da and reproduction flag data Df from the address/flag data reproduction units 57a and 57b, and also receives a write and erase light beam incident on the magneto-optical disk 11. An access control signal Ca for controlling the incident position of the reading light beam is sent to the head drive units 23a and 23b and the tracking control units 25a and 2.
A first light beam control signal Cw for generating a writing and erasing light beam and a second light beam control signal Cr for generating a reading light beam are transmitted to the light beam controllers 49a and 5b, respectively. 49b, a motor rotation control signal Cm for maintaining the rotation speed of the motor 15 at a predetermined value.
The recording modulation signal Sm is transmitted to the motor 15, and the recording modulation signal Sm is transmitted to the light beam controller 49.
A state in which the distribution control signal Cd for selecting the state supplied to the light beam controller 49a and the state supplied to the light beam control unit 49b is supplied to the switch 53, and the read signal Si from the signal forming unit 51a is supplied to the control block BC. A selection control signal Cs for selecting the state in which the read signal Si from the signal forming section 51b is supplied is supplied to the switch 55, respectively.

G-2 Control block (Figures 1 to 3) Control block B
In C, a memory 61, an encoder 62 . Modulation section 63. A demodulator 64 and a decoder 65 are arranged. Further, the signal processing control section 60 and the memory 61 are connected to an interface section 66.

Memory 61. The encoder 62 and the modulation section 63 form a recording signal supply system, and in this recording signal supply system, for example, the magneto-optical disk 11 is supplied from an external host computer or the like through the interface section 66.
After main data, flag data, erasing data, etc. to be written in the sector are taken into the memory 61, an error correction code is added and encoded in the encoder 62. Then, in the modulation section 63, the data encoded in the encoder 62 is modulated based on a predetermined modulation method that differs depending on the data content, for example, modulation based on the NRZ1 method for main data. , and F for flag data.
Modulation based on the M method is performed, and the above-mentioned recording modulation signal Sm is sent out from the modulation section 63, and it is transmitted to the drive block BD.
supplied to

On the other hand, the memory 61. Demodulator 64 and decoder 6
5 forms a data reproducing system including a clock reproducing section 67 attached to the demodulating section 64, and in this data reproducing system, the read signal Si sent out from the switch 55 of the drive block BD as described above is used. is supplied to the demodulating section 64 and the clock reproducing section 67. Then, the read signal Si
is for main data, the clock signal CL corresponding to the read signal Si is obtained from the clock reproducing section 67, and the demodulation section 64 performs demodulation using the clock signal CL on the read signal Si. As a result, encoded reproduction main data is obtained from the demodulator 64. Next, the decoder 65 performs decoding with error correction on the encoded reproduced main data, and the decoder 65 obtains reproduced main data, which is stored in the memory 61.
be taken in. Thereafter, the reproduced main data is read out from the memo 1J61 and sent to the outside through the interface section 66.

Further, the control block BC is provided with a system controller 69, and this system controller 69 controls the operation of the signal processing control section 60, and also controls the operation of the controller 5 in the drive block BD.
9 operation control is performed. That is, the operation of the control block BC and the drive block BD is controlled by the system controller 6.
It is comprehensively managed by 9.

G-3 Reproduction of each data (FIG. 1) When data is read from a selected sector on the magneto-optical disk 11 by an example of the optical disk recording/reproducing apparatus according to the present invention as described above, it is necessary to read the data from the selected sector on the magneto-optical disk 11. The optical head unit 1
A reflected light beam from a selected sector on the magneto-optical disk 11 is detected by the optical detection unit built in the optical head unit 19a or 19b.
A detection output signal Pd corresponding to a change in the reflected light beam is obtained from b. That is, the address data and data record recorded in the address data area AD in the selected sector! ! The main data written in the area and the flag data written in the flag recording section F are read respectively.

Then, a read address/data signal Ad is obtained from the signal forming section 51a or 51b as the address data recorded in the address/data section AD is read based on the detection output signal Pd. This read address/data signal Ad is directly supplied to the address/flag data reproducing section 57a or 57b, and reproduced address data Da is obtained from the address/flag data reproducing section 57a or 57b. In this way,
The reproduction address data Da for the selected sector on the magneto-optical disk 11 is quickly obtained in the drive block BD, and the obtained reproduction address data D
a is supplied to the controller 59 for use in operation control.

Further, as the main data written in the data recording area DT is read from the signal forming section 51a or 51b based on the detection output signal Pd, a read signal Si for the main data is obtained. This read signal St is processed in the data reproduction system including the decoder 65 of the control block BC supplied through the switch 55, thereby reproducing the main data. That is, the magneto-optical disk 1
The reproduction output of the main data written in the selected sector in block 1 is obtained by the data reproduction system in control block BC.

Further, as the flag data recorded in the flag recording section F is read from the signal forming section 51a or 51b based on the detection output signal Pd, the flag data is read out from the signal forming section 51a or 51b.
A read signal Si for data is obtained. This read signal Si is processed in the directly supplied address/flag data reproducing section 57a or 57b, thereby reproducing flag data. That is, the reproduced output of the flag data written in the selected sector on the magneto-optical disk 11 is obtained as reproduced flag data Df from the address/flag data reproduction section 57a or 57b provided in the drive block BD. The obtained playback flag data Df is
The signal is supplied to a controller 59 for use in operation control.

G-4 Usage Example (FIG. 4) An example of the optical disc recording and reproducing apparatus according to the present invention, which is divided into a drive block BD and a control block BC as described above, is shown in FIG. 4, for example. As in, for one control block BC, a plurality of drive blocks B D
(shown as BD, BD, BD7) can be used in a connected state. Under such usage, the drive block BD,
, BD, .

In such a case, the driving blocks B D +, B D z,
... BD is equipped with address/flag data reproducing sections 57a and 57b, and is capable of obtaining reproduction address data and reproduction flag data, so that the burden on the control block BC is reduced. It is significantly reduced, and also the control block BC and drive block B
The configuration for connecting each of D + , BD z , . . . BD, l can be simplified.

Effects of the Invention H As is clear from the above explanation, the optical disc recording and reproducing apparatus according to the present invention allows a light beam to be incident on a rotatably driven writable optical disc to form a disc on the writable optical disc. It is possible to write data to and read the written data to and from an annular recording track, which is divided into a control block and a drive block to which a writable optical disc is mounted, and a control block that is used to write data to a writable optical disc. By providing a data reproducing section for reproducing output of main data written to the drive block, and an address/data reproducing section for reproducing address data attached to a writable optical disk in the drive block,
When writing data to or reading data from each of a number of recording segments specified by address data on a writable optical disc, such as sectors on a magneto-optical disc, address data for each recording segment is used. can be quickly regenerated within the drive block.

That is, the reproduction address data can be quickly obtained without being involved in the data reproduction operation performed in the control block, so that the address data identifying each recording section can be quickly obtained without involving the data reproduction operation performed in the control block. This means that the operations performed using the system can be performed reliably and smoothly.

Furthermore, since the drive block is provided with an address/data reproduction section, even when a plurality of drive blocks are connected to one control block, the reproduction address/data reproduction section associated with each drive block can be used. Data can be obtained quickly, the burden on the control block can be reduced, and each drive block and control processor can be
It is possible to simplify the configuration for making a connection with the plug.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an example of an optical disc recording/reproducing apparatus according to the present invention, FIG. 2 is a schematic configuration diagram showing the positional relationship between the optical head section and the magnet in the example shown in FIG. 1, and FIG. 3A and B are diagrams for explaining the magneto-optical disk used in the example shown in FIG. 1, and FIG. 4 is a schematic configuration for explaining the usage example of an example of the optical disk recording and reproducing apparatus according to the present invention. It is a diagram. In the figure, 11 is a magneto-optical disk, 13 is a disk mounting part,
17a and 17b are magnets, 19a and 19b are optical head parts, 49a and 49b are light beam control parts, 51
a and 51b are signal forming sections, 57a and 57b are address/flag/data reproducing sections, 59 is a controller, and 6
0 is a signal processing control section, 61 is a memory, 62 is an encoder, 63 is a modulation section, 64 is a demodulation section, 65 is a decoder, 69
is the system controller, BD is the drive program, B
C is a control block. Recording track and sector diagram 3

Claims (1)

[Scope of Claims] A disk drive unit that rotationally drives an optical disk on which data can be written and read from a recording section specified by address data, and a light beam is incident on the optical disk that is rotationally driven by the disk drive unit. an optical head section that detects a light beam passing through an optical disk rotationally driven by the disk drive section, and a light beam that causes the light beam incident on the optical disk from the optical head section to write or read data in the recording section a beam control section, a signal forming section that forms a read signal based on a detection output obtained by detecting the light beam that has passed through the optical disk by the optical head section, and a signal forming section that receives the output of the signal forming section and generates reproduction address data. a drive block comprising an address/data reproducing section to obtain an address/data; a recording signal supply section for supplying a recording signal corresponding to the main data to be written to the light beam control section; a control block comprising a main data reproducing section that obtains a reproduction output of the main data read from the main data reproducing section, and an operation control section that controls the respective operations of the recording signal supply section, the main data reproducing section, and the drive block; An optical disc recording and reproducing device comprising: