JP3081302B2 - Information recording method, information recording device, information recording / reproducing method, optical disk, information reproducing device, and information recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical disk recording / reproducing method, an optical disk, an optical disk reproducing apparatus, and an optical disk recording / reproducing apparatus.

[0002]

2. Description of the Related Art As a read-only optical disk on which acoustic information and various data are recorded, a compact disk (hereinafter abbreviated as CD) is conventionally known. There are two types of CDs used for recording acoustic information, 12 cm in diameter and 8 cm in diameter, and up to about 74 minutes of information is recorded.
In the field of information processing such as a computer, it is used as a medium (CD-ROM) for recording a large amount of digital information.

On the other hand, in recent years, rewritable optical disks using a magneto-optical recording method, a phase change recording method, or the like have been developed. In a magneto-optical disk based on the magneto-optical recording method, information is stored as upward or downward in a perpendicular magnetization film, and information is recorded and reproduced by laser light. As a magneto-optical disk system, for example, it has a smaller diameter (6.4 cm in diameter) than a CD, has the same reproduction time as a CD, and
A rewritable magneto-optical disk and its recording / reproducing apparatus have been developed (see "Nikkei Electronics [Nikkei BP]
No. 528 (1991.5.27), pp. 106 to 10
7 "and" Radio technology [Radio technology company] (June 1991) pages 9 to 12 ". ). In this magneto-optical disk system, for example, 1
6-bit data is compressed and recorded as 4-bit data.

In this magneto-optical disk system, a large-capacity memory (approximately 1 Mbit) is provided, so that a part or all of a plurality of songs recorded on the disk can be reproduced while being mixed (mixing). It is.

[0005]

However, in general, as shown in FIG. 6, when reproducing an optical disk DK, an optical pickup 2b for reading information by irradiating a recording surface S of the optical disk with a laser beam, and an optical pickup 2b for reading the information. This is performed by the carriage 2c that can be moved in the radial direction of the optical disk DK. In this case, if the light beam is within a range of a predetermined length 2δ in the radial direction of the disk, that is, within ± δ from both sides of the center of an objective lens (not shown) of the optical pickup 2b, the light beam is emitted by a tracking actuator (not shown) in the optical pickup 2b. It is possible to move. The predetermined length 2δ is usually about 600 tracks in number of tracks,
It is about 1 mm in length. Therefore, if the data to be read is present on the outer peripheral side of the disc a little from the point P ₁ from even a little disk inner circumference side or the point P _2, 6, the length to the disk inner circumference side or the outer peripheral side by the carriage 2c The information could not be read unless it was moved by 2δ.

Therefore, as shown in FIG. 7, a plurality of tracks T ₁ , T ₂ , T ₃ (T ₀ is TOC: Table of Con
from the optical disc DK which tents) are recorded, the rear example, if reading a track T ₁ and T _2, when trying to mix to play is mechanically large reciprocating an optical pickup 2b, the carriage 2c as shown in FIG. However, there is a problem in terms of time loss and reliability of the mechanism.

[0007] Therefore, the present invention provides information that enables mixing reproduction with little time loss and little problem in terms of reliability.
Information recording method, information recording / reproducing method, optical disk, information recording
It is an object to provide an apparatus, an information reproducing apparatus, and an information recording / reproducing apparatus.

[0008]

In order to solve the above-mentioned problems, the present invention according to claim 1 is directed to a method for rotating an optical disk .
Pair I Ri the optical disc to irradiate a light beam by
A possible optical pickup unit recording information and,
About a range within a predetermined length in the radial direction of the optical disc.
The optical pickup means itself is moved as a whole.
Optical pickup capable of irradiating the light beam without the need
A information recording Rokukata method of recording the information on an optical disk to be reproduced by the optical disc reproducing apparatus having means, in the case of recording a plurality of information pieces to the optical disc, the information pre above range dividing the number of the subranges <br/> equal to the number of pieces, searching each of said sub-ranges within the range, the
Configured that records all of said plurality of information pieces by repeating the recording procedure of the information pieces recorded allocate each to a small range of the respective.

[0009] The invention described in Claim 2, Ri by the applying light beam to the rotating optical disc such
One of information reading or recording on an optical disk one
It is an optical pickup device capable, the optical disc
For a range within a predetermined length in the radial direction of the
The backup means themselves are not moved as a whole
An optical disk to be reproduced by an optical disk reproducing device having an optical pickup means capable of irradiating a light beam.
An information recording and reproducing method for recording and reproducing the information.
When recording a plurality of information pieces on the optical disc,
Is the number of small ranges equal to the number of the information pieces.
Divide and search each of said sub-ranges within said range,
Record and allocate the information pieces to the respective small areas.
By repeating the recording procedure,
Recording all of the information pieces from the optical disc;
When playing back, it is allocated and recorded within the above range.
One of the partial information pieces that are
And temporarily stores the read partial information piece in the information storage means.
Search and read other partial information pieces while storing them in
By repeating the reproducing procedure of
It is configured to regenerate a part or all of the mixture .

[0010] The invention according to claim 3 is recorded.
Information pieces are transmitted from the optical pickup
Optical disc that is played back by
The optical pickup means itself is a half of the optical disk.
Of the light beam without being moved as a whole in the radial direction.
It has a size within the predetermined length in the radial direction that allows irradiation.
The first area on the optical disc,
Some of the information pieces are recorded independently for each information piece.
The first area including the recorded second area by the number of the information pieces.
An area is formed continuously in the radial direction .

Further, the invention according to claim 4 rotates.
By irradiating the optical disk with a light beam,
Optical pickup capable of recording information on optical disc
Means, not more than a predetermined length in the radial direction of the optical disc.
The optical pickup means itself is the entire area
Irradiation of the light beam is possible without moving
Optical pickup means, and the optical pickup means
Moving means for moving in the radial direction, and the range
Divide into a number of small ranges equal to the number of pieces, and
Search each of the small ranges, and replace each of the information pieces with each of the small
Repeat the recording procedure of assigning and recording each area
By recording all of the plurality of pieces of information
A control for controlling the optical pickup means and the moving means.
And control means . According to claim 5
Invention irradiates a rotating optical disk with a light beam.
To read information from the optical disk
Optical pickup means, the radius of the optical disc
Within the specified length in the direction
The light beam does not move as a whole.
Optical pick-up means capable of irradiating the
Moving means for moving the up means in the radial direction;
Information storage means for temporarily storing the information,
It is divided into a number of small ranges equal to the number of the information pieces, and
Search each of the sub-ranges within the
Repeat the recording procedure of assigning and recording to each small area.
By returning, all of the plurality of pieces of information have been recorded
When reproducing the plurality of pieces of information from an optical disc,
In a part of the information piece allocated and recorded within the
Reading out any one of the partial information pieces;
Searching for other partial information pieces while temporarily storing
The reproduction procedure of reading is repeated, and the
The optical picker is used to mix and regenerate part or all.
Control unit, the moving unit, and the information storage unit.
Control means. Also, in claim 6
The described invention applies a light beam to a rotating optical disc.
Reading information from the optical disk by irradiation
Optical pickup means capable of either recording or recording
And within a predetermined length in a radial direction of the optical disc.
Regarding the range, the optical pickup means itself as a whole
A light pipe capable of irradiating the light beam without being moved
Backup means and the optical pickup means with the radius
Moving means for moving in the direction, and temporarily storing the information
Information storage means for storing a plurality of pieces of information on the optical disc.
When recording, first, the range is determined by the number of the information pieces.
Divided into the same number of small ranges, and within the range,
And divide each piece of information into its respective subrange.
Second, after the recording procedure of recording
In the following range, recorded in the small range
Other partial information following the partial information piece that is the information piece.
One of the report pieces is temporarily stored in the information storage means.
While moving the optical pickup means by the moving means
And then repeat the recording procedure.
By returning all of the plurality of pieces of information,
When reproducing the plurality of pieces of information from the optical disc,
Is the part allocated and recorded within the range first.
One of the minute information pieces is read out and temporarily stored in the information storage means.
Search and read other partial information pieces while temporarily storing
Secondly, the following range
Other said part following said reproduced partial information piece within
While temporarily storing any of the information pieces in the information storage means,
The optical pickup means is moved by the moving means
To repeat the procedure of having the playback procedure performed later
A part or all of the plurality of information pieces are mixed and reproduced.
The optical pickup means, the moving means, and
Control means for controlling the information storage means.
Is done.

[0012]

According to the first to sixth aspects of the present invention, as shown in FIG. 3, when a plurality of (for example, n) information pieces (for example, songs) are recorded on the optical disc DK, predetermined length than the radial direction on the optical disc DK which can mosquito <br/> bar without the optical pickup itself is moved
The range of the inner (2.delta.) And n divided recording the songs each by the amount that can be recorded on a small range of the n split. At the time of reproduction, information of each small range is read and temporarily recorded and mixed and reproduced. Therefore, the optical pickup itself moves.
Range within the readable length when not moved (2δ)
A small portion of the music can be mixed and reproduced within the music, and by repeating this, the entire music can be reproduced. As a result, it is possible to reproduce the music without greatly reciprocating the optical pickup as in the related art, so that there is no time loss and the problem of the reliability of the mechanism is solved.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a configuration diagram of an embodiment of a magneto-optical disk system for recording and reproducing acoustic information and the like according to the present invention. In FIGS. 1 and 2, DK is a magneto-optical disk having a perpendicular magnetization film and is stored in a protection cartridge CT. A guide groove is formed in the magneto-optical disk DK, and the guide groove is formed so as to wobble at a frequency that is FM-modulated with data (ATIP: Absolute Time In Pregroove) indicating absolute time information. . In data writing, information is written by being heated to a Curie temperature or higher by a laser beam and applying a magnetic field modulation to the perpendicular magnetization film.

Reference numerals 1 to 24 constitute a magneto-optical disk recording / reproducing apparatus. Reference numeral 1 denotes a spindle motor that rotationally drives the magneto-optical disk DK, 2a denotes a magnetic head, 2b denotes an optical pickup as optical pickup means, and an actuator (not shown) that moves in the radial direction of the magneto-optical disk DK in conjunction with the magnetic head 2a. And a laser light source, lens, photodetector, etc., not shown
At the time of reproduction, a laser beam spot is irradiated on the magneto-optical disk DK, and at the time of data reproduction, the intensity of reflected light generated when the polarization plane is slightly rotated by the magnetic Kerr effect in the magneto-optical disk DK irradiated with the light spot is detected. And
RF (Radio Frequenc) obtained by photoelectrically converting the strength
y) A signal is output.

The optical pickup 2b is provided on a carriage 2c as a transfer means as shown in FIG. 2, and the carriage 2c connects the optical pickup 2b to the magneto-optical disk D.
It is configured so that it can be freely transferred in the radial direction of K.

3 is a spindle servo circuit for controlling the spindle motor 1, 4 is a focus servo circuit for controlling the focus of a light spot from the optical pickup 2b irradiated to the magneto-optical disk DK, 5 is a magnetic head 2a and an optical pickup 2b Is a tracking servo circuit for controlling the movement of the magnetic head 2a to the track position, and 6 is a head servo circuit for controlling the magnetic head 2a. 7 is an optical pickup 2b
Head amplifier for amplifying the output signal of the head amplifier 8, an RF amplifier 8 for generating and outputting a reproduction signal and various signals for control from the output of the head amplifier 7, and 9 a record for controlling the light spot output of the optical pickup 2b during data recording. Drive circuit.

Reference numeral 11 denotes an ATIP decoder for detecting the wobbling frequency from the output of the RF amplifier 8 when reproducing data, and detecting temporal position information on the magneto-optical disk DK even when information is not recorded, and 12 for recording data. EFM (Eight to Fourteen Modulati)
on) EFM encoder 13 for converting the signal to a signal and outputting it to record drive circuit 9.
To demodulate the read EFM signal output from
The M decoders 14A and 14B receive the input A during data recording.
And a compression encoder that compresses the data amount of the digital signal input from the input B to about 1/5 using the minimum audibility characteristic and masking effect of the human ear, and 15A and 15B are different from the compression encoders 14A and 14B. Conversely, compression decoders 16A and 16A for demodulating the compressed data reproduced from the magneto-optical disk DK to the original data
B denotes an A / D converter for converting an analog signal input from the input A and the input B into a digital signal during recording;
4 is a mixer for mixing digital signals output from the compression decoders 15A and 15B, and 17 is a D / A for converting the digital signal mixed by the mixer 24 into an analog signal.
A converter 18 is a low-pass filter (LPF) that cuts a predetermined frequency with respect to an output signal from the D / A converter 17 and outputs the cut-off signal, and 19A and 19B can also be used to prevent sound skipping due to vibration or the like. D as an information storage means for temporarily storing recording data of about 1 Mbit
It is a RAM (Dynamic Random Access Memory). 23
Is a changeover switch. By switching the switch, the output signal of either the compression encoder 14A or 14B is temporarily stored at the time of data recording and the EFM encoder 12
When the data is reproduced, the output signal of the EFM decoder 13 can be temporarily stored and output to either the compression decoder 15A or 15B.

Reference numeral 20 denotes a system controller which is control means for controlling the entire apparatus at the time of recording and reproducing data.
Reference numeral denotes an operation unit to which data recording / reproduction operations are input, and includes a recording key (REC), a reproduction key (PLAY), a search key (SEARCH), a stop key (STOP), and the like.
Reference numeral 22 denotes a display unit for performing various displays during data recording / reproduction.

In the above configuration, the signal format of the information recorded on the magneto-optical disk DK is the same as the signal format for the CD. Therefore, the data to be recorded is divided into frames, and sub-coding of various information and control information on the recording data is performed for each frame. The subcode recorded by the subcoding is divided into a plurality of continuous frame units to form information. On the innermost circumference of the magneto-optical disk DK, an area for recording information on recorded data (hereinafter referred to as TOC: Table of Contents) is arranged, and a data recording area (track) and a data length (time) are recorded. And the like are recorded simultaneously when each data is recorded.

On the basis of the recorded information, a magneto-optical disk D
When reproducing K, the system controller 20 sets the TOC
Is read and stored in the RAM, which is an internal memory, and used for display and access control. When recording information on the magneto-optical disk DK, the system controller 20 generates and records the contents of the subcoding, and also updates the contents of the TOC.

Next, the control of the system controller 20 when recording and reproducing information pieces such as music and data will be described with reference to FIG.
This will be described with reference to FIG. In this case, as a plurality of information pieces,
Consider song A and song B as shown in FIG. here,
It is assumed that song A is accompaniment music and song B is a singing voice sung along with song A. At the time of recording on the magneto-optical disk DK, the music A is input from the input A, for example, and the music B is input from the input B. These analog data are converted into digital data by A / D converters 16A and 16B, respectively, compressed by compression encoders 14A and 14B, and temporarily stored in DRAM 19 or 19B.
These digital data are stored in the system controller 2
0, the changeover switch 23 is switched, and for example, according to a certain timing, for example, song A → song B → song A → song B →
Are recorded on the magneto-optical disk DK in the order of. At this time, the length 2δ on the disc on which a pair of pieces of music A and music B, for example, A1 and B1 are recorded,
Is controlled so that is less than a range that can be covered at one time. In this case, the temporal position data of each part of the music pieces A and B may be written as subcode data (Q data) and recorded on the TOC, or may be recorded on the TOC in the form of ATIP information. In addition, the above-mentioned predetermined length 2δ
May be a length within the cover range of the optical pickup 2b, and need not necessarily be the maximum range length. Further, the ratio of the length of the song A to the length of the song B within the predetermined length 2δ is not necessarily equal.

On the other hand, when the songs A and B are read from the magneto-optical disk DK on which the songs A and B are recorded by the above-described method and mixed and reproduced, the TOC data is first read, and the songs A and B are read. Is stored in a memory (not shown) in the system controller. Next, this TO
The data of the magneto-optical disk DK is read based on the C data. In this case, for example, as shown in FIG.
First, the pair (pair) of the portion A1 of the song A and the portion B1 of the song B is 1
The optical pickup 2b is read by the reading operation of the optical pickup 2b, and the optical pickup 2b is moved by the carriage 2c to read the next pair A2, B2 while being stored in the DRAM 19A or 19B. Song A like B2 → A3, B3 → A4, B4
While reading song B, both can be mixed and reproduced.

Here, during recording, the optical pickup 2b and the magnetic head 2a move the tracks A1, B1, A2, B2,
The music A and the music B are continuously played and input without interruption during this time. The principle will be described with reference to FIG. A is an information transfer rate from an external music source, and B is a compression encoder 14A.
Or the data compression rate in 14B, C indicates the information transfer rate from the compression encoder 14A or 14B to the DRAM 19A or 19B, and E indicates the information transfer rate from the DRAM 19A or 19B to the recording circuit including the EFM encoder 12, etc. I have. Here, the relationship of C = A × B is established. When a normal value is applied to A to E as an example, A = 1.4 Mbps (Mbit / sec) B = 0.21 C = 0.3 Mbps D = 1 Mbit E = 1.4 Mbps Therefore, under the above conditions, the DRAM 19A
Or 19B can compress data compressed to about 1/5 at a maximum of about 3.
It is possible to accumulate data for 3 seconds (= 1 Mbps / 0.3 Mbps). On the other hand, the DRAM 19A or 19B can transfer the data to the recording circuit in about 0.7 seconds (= 1 MbitＭ1.4 Mbps) even if the accumulated data is accumulated up to the maximum capacity. Optical pickup 2 using a time difference of 2.6 seconds (= 3.3-0.7) until the data is accumulated.
b and the magnetic head 2a can perform recording on another track.

During reproduction, tracks A1 → B
The principle of reading and reproducing as 1 →... Will be described with reference to FIG. FIG. 5 has a completely opposite relationship to FIG. That is, a relationship of A = C × (1 / B) is established, and if a normal value is applied as an example, A = 1.4 Mbps 1 / B = 4.67 C = 0.3 Mbps D = 1 Mbit E = 1. 4 Mbps. Therefore, under the above conditions, the DRAM 19A
Or 19B stores data read by the optical pickup 2b (compressed to about 1/5 and recorded on the disk) at a maximum of 1
Mbits are accumulated, and the required time in that case is about 0.7 seconds (= 1 Mbit ÷ 1.4 Mbps). On the other hand, D
The data stored in the RAM 19A or 19B takes about 3.3 seconds (= 1
Mbit ÷ 0.3 Mbps). Therefore, the optical pickup 2b can read another track using the time difference of 2.6 seconds (= 3.3-0.7). In this way, the allocated music is recorded and reproduced without interruption.

In the above embodiment, the case where the number of information pieces (songs) is two, such as music piece A and music piece B, has been described. However, as shown in FIG. It may be 3 or 4 or more. In this case, the compression encoder, compression decoder, A / D converter, DR
AM needs to increase corresponding to the number of information pieces.
Further, the changeover switch requires the same number of changeover terminals as the number of information pieces.

The arrangement of each information piece within the predetermined length 2δ is shown in FIG. 3B by A1 → B1 → C1 → A2.
The order of A, B and C may be fixed, such as → B2 → C2 →... Or A1 → B1 → C1 → A2 → C2 → B2 → B
There is no problem even if the disorder is 3 → C3 → A3 →. This is because the temporal position information of each part (for example, Ai) can be grasped from the TOC information as subcoder data or ATIP data. In short, it is only necessary that each partial information piece (Ai, Bi, Ci, etc.) of the plurality of information pieces be recorded within the range of the predetermined length 2δ. With this arrangement, the recording or reproducing operation of a set of partial information pieces can be performed only by the operation of the actuator of the optical pickup without moving the carriage.

Further, according to the above embodiment, the DRAM
It is needless to say that only one of the songs A and B can be reproduced by using only one of the songs 19A and 19B.

In the above embodiment, a magneto-optical disk has been described. However, the present invention may be applied to any optical disk which can be recorded, and can also be applied to a read-only optical disk.

[0029]

As described above, according to the present invention,
There is an advantage that it is possible to provide an information recording method, an information recording / reproducing method, an optical disk, an information recording device, an information reproducing device, and an information recording / reproducing device capable of reproducing with less time loss and with less problem in terms of reliability.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a detailed configuration of an information reading portion in one embodiment of the present invention.

FIG. 3 is a diagram illustrating the operation of one embodiment of the present invention.

FIG. 4 is a diagram illustrating an operation at the time of recording according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating an operation at the time of reproduction according to an embodiment of the present invention.

FIG. 6 is a diagram (1) illustrating a problem in a conventional magneto-optical disk system.

FIG. 7 is a diagram (2) illustrating a problem in the conventional magneto-optical disk system.

[Explanation of symbols]

 CT: Protective cartridge DK: Magneto-optical disk 1: Spindle motor 2a: Magnetic head 2b: Optical pickup 2c: Carriage 3: Spindle servo circuit 4: Focus servo circuit 5: Tracking servo circuit 6: Head servo circuit 7: Head amplifier 8 ... RF amplifier 9 ... Record drive circuit 11 ... ATIP decoder 12 ... EFM encoder 13 ... EFM decoder 14A, 14B ... Compression encoder 15A, 15B ... Compression decoder 16A, 16B ... A / D converter 17 ... D / A converter 18 ... Low pass filter 19A, 19B DRAM 20 System controller 21 Operation unit 22 Display unit 23 Changeover switch 24 Mixer

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tomohisa Tsukui 4-2610 Hanazono, Tokorozawa-shi, Saitama Prefecture Pioneer Corporation Tokorozawa Plant (72) Inventor Izumi Ueda 4-2610 Hanazono, Tokorozawa-shi Saitama Prefecture Pioneer shares (72) Inventor Eiji Muramatsu 4-2610 Hanazono, Tokorozawa City, Saitama Prefecture Pioneer Corporation Tokorozawa Factory (72) Inventor Hidehiro Ishii 4-2610 Hanazono, Tokorozawa City, Saitama Pioneer Corporation Tokorozawa Factory (72) Inventor Toshihiro Maehara 4-2610 Hanazono, Tokorozawa, Saitama Prefecture Pioneer Corporation Tokorozawa Plant (72) Inventor Hitoshi Kasama 4-2610 Hanazono, Tokorozawa City, Saitama Prefecture Pioneer Corporation Tokorozawa Plant (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B ^7/ 00-7/013 G11B 20/12

Claims (6)

(57) [Claims] 1. A recording <br/> capable optical pickup means information relative to O Ri the optical disk by irradiating a light beam with respect to the rotating optical disc, the optical disc
The optical pitch for a range within a predetermined length in the radial direction of the
The backup means itself is not moved as a whole
For an optical disc to be reproduced by an optical disc reproducing device having an optical pickup means capable of irradiating a light beam .
A information recording Rokukata method of recording the information in the case of recording a plurality of information pieces into the optical disk is to divide the front above range to a small range of several equal to the number of the information pieces, wherein each of the small range to search within, wherein the benzalkonium to record all of said plurality of information pieces by each said piece of information repeated recording procedure of each allocated and recorded to a small range of the respective information recording how you and. Wherein information read or either one of recording capable optical pickup means with respect to I Ri the optical disk by irradiating a light beam with respect to the rotating optical disc
And within a predetermined length in a radial direction of the optical disc .
Regarding the range, the optical pickup means itself as a whole
A light pipe capable of irradiating the light beam without being moved
Recording / reproducing the information on / from an optical disk to be reproduced by an optical disk reproducing apparatus having a backup means
In the information recording / reproducing method, when recording a plurality of information pieces on the optical disk, the range is divided into a number of small ranges equal to the number of the information pieces.
Then, each of the small ranges is searched for in the range, and each of the information pieces is allocated to each of the small ranges and recorded.
By repeating the recording procedure of
When all the pieces are recorded and the plurality of pieces of information are reproduced from the optical disc,
Is the information piece allocated and recorded within the range
One of the partial information pieces is read, and the read partial information piece is temporarily stored in the information storage unit.
Searching and reading other partial information pieces while remembering
By repeating the reproducing procedure , some or all of the information pieces are
Is an information recording / reproducing system characterized by
Raw method. 3. A plurality of recorded information pieces are optically picked up.
Playback by irradiating light beam from backup means
In an optical disk to be used, the optical pickup means itself is located in a radial direction of the optical disk.
Irradiation of the light beam without being moved as a whole
Has a size within the predetermined length in the radial direction that is capable of
The first area on the optical disc, which is a different area
Some of the information pieces are recorded independently for each information piece.
First area including the same number of second areas as the information pieces
Are formed continuously in the radial direction.
Optical disk. 4. A light beam is applied to a rotating optical disk.
Recording information on the optical disk by irradiating
Optical pickup means, wherein the optical disc
Within the specified length in the radial direction of the
The backup means itself is not moved as a whole
An optical pickup means capable of irradiating a light beam, and a moving means for moving the optical pickup means in the radial direction.
And divides the range into a number of small ranges equal to the number of the information pieces.
Searching each of the small ranges within the range,
Report pieces should be allocated to each of the small areas and recorded
By repeating the recording procedure, all of the information pieces
The optical pickup means and the transfer
An information recording apparatus comprising: a control unit that controls a moving unit . (5) Light beam on rotating optical disc
By irradiating, the information can be read from the optical disc.
Possible optical pickup means, wherein
For the range within the specified length in the radial direction,
The light does not move up as a whole.
Optical pickup means capable of irradiating a beam, Moving the optical pickup means in the radial direction;
Motive means, Information storage means for temporarily storing the information, Divide the range into smaller ranges equal in number to the information pieces
Searching each of the small ranges within the range,
Allocate the report pieces to each of the small areas and record Notation
By repeating the recording procedure, all of the plurality of pieces of information are
Playing the plurality of pieces of information from a recorded optical disc
In the case, the information allocated and recorded within the range
Read out any of the partial information pieces that are part of
Other partial information pieces while temporarily storing them in the information storage means.
The reproduction procedure of searching for and reading
So that some or all of the information pieces are mixed and reproduced
Optical pickup means, said moving means and said information storage means
Control means for controlling the step; An optical disk reproducing device comprising: 6. Light beam on rotating optical disc
Reading information from the optical disk by irradiation
Optical pickup means capable of either recording or recording
And within a predetermined length in a radial direction of the optical disc.
Regarding the range, the optical pickup means itself as a whole
A light pipe capable of irradiating the light beam without being moved
Backup means, Moving the optical pickup means in the radial direction;
Motive means, Information storage means for temporarily storing the information, When recording a plurality of information pieces on the optical disc,
The above range is reduced to a small range equal to the number of the information pieces.
Divide and search each of said sub-ranges within said range,
It is said that information pieces are allocated to each of the small areas and recorded.
Second, the recording procedure is performed, and
And a portion which is the information piece recorded in the small area.
Any of the other partial information pieces following the information piece
While temporarily storing the information in the information storage means,
After moving the optical pickup means,
By repeating the recording procedure,
Have all the pieces of information recorded, When reproducing the plurality of pieces of information from the optical disc,
Is the part allocated and recorded within the range first.
One of the minute information pieces is read out and temporarily stored in the information storage means.
Search and read other partial information pieces while temporarily storing
Secondly, the following range
Other said part following said reproduced partial information piece within
While temporarily storing any of the information pieces in the information storage means,
The optical pickup means is moved by the moving means
To repeat the procedure of having the playback procedure performed later
A part or all of the plurality of information pieces are mixed and reproduced.
You So that the optical pickup means, the moving means and
Control means for controlling the information storage means; An information recording / reproducing apparatus comprising: