JP2003059062A - Optical information recording medium and recording apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical information recording medium which secures recording incompatible with a conventional low-speed recording apparatus and secures compatibility of reproduction, and easily deals with an extended specification by using a discontinuous region. SOLUTION: When there exist closely two or more exclusive regions under recording where a recording apparatus accesses only during recording operation, and each start address of the exclusive region is set to be tn (n=0, 1, 2, etc.), and a termination address is set to be tn+1 -1, an address t is expressed by t=m×i+tn (m=1, 2, 3, etc.), to the number i of sectors from the start address tn . The exclusive region consists of regions A1 and A3 of m = 1 and a region A2 of m≠1. The address discontinuous region A2 which is set to be m≠1 and physically exists in the exclusive region is included. Accordingly, the optical information recording medium can deal with the extended specification by using the address discontinuous region A2 of m≠1 to add new property information, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rewritable optical information recording medium for high speed recording and a recording apparatus.

[0002]

2. Description of the Related Art In recent years, a recordable optical information recording medium, such as a recordable compact disc (CD-R) or a rewritable medium, is used for recording information by changing the recording layer material by irradiating a light beam. Regarding possible compact discs (CD-RW), high-speed recording of optical information recording media has been advanced. There are also multi-speed compatible media that can be recorded at an arbitrary speed, and it is required that the recording quality at a high speed be ensured and that the recording quality at a low speed be good. In particular, according to Orange Book Part III, which is a standard specification for rewritable compact discs, high speed recording which is 4 to 10 times faster than the conventional 1 to 4 times faster recording speed is being standardized. Further, at high speed recording, the recording performance of the linear velocity constant recording (CLV) method becomes stricter, so it is necessary to perform recording at the constant angular velocity recording (CAV) method. In order to support such a CAV recording method, a general optical disc having a diameter of 120 mm requires a speed margin of about 3 times.

However, the optical information recording medium has a margin with respect to the recording speed, and in particular, in the case of the phase change type optical information recording medium, it is difficult to widen the recording speed margin due to the characteristics of the recording material. Is said to be. Therefore, if the recording speed is increased, the optical information recording medium can be recorded only at a high speed, and it becomes impossible to secure the recording compatibility with a low-speed recording device.

However, even with such a high-speed optical information recording medium, it is necessary that the conventional recording device and the reproducing device can read it (reproduction compatibility), and at the same time, the conventional recording device cannot record (recording incompatibility). )is necessary.

As a method of making such recording incompatibility, the above-mentioned Orange Book Part III volume2 version1.
ATIP (Absolute Time In Pr
e-grove) JUMP is mentioned as an example. This is P
By making address discontinuity points in CA (Power Calibration Area), incompatibility of recording is ensured. That is, HS that supports recording from 4x speed to 10x speed
When attempting to record on a CD-RW disc with a low speed drive that supports only up to quadruple speed, the PCA cannot be accessed and an OPC error is generated to ensure recording incompatibility.

[0006]

However, when the discontinuity method as described in Orange Book Part III volume2 version 1.0 is used for the recording incompatibility method, when a higher higher speed recording standard is established. Will be a problem. For example, HS CD-RW compatible with 4 to 10 times speed recording
There may be a case where a new standard capable of recording up to 16 times speed is considered while ensuring recording compatibility with the drive. HS CD
-ATIP to ensure recording compatibility with RW drive
At the same time that JUMP is required, the ATIP Extra Information encoded in the lead-in area cannot be changed. However, it is necessary to provide the medium with new parameters relating to 16x speed recording, such as OPC parameters.

Therefore, the present invention can ensure reproduction compatibility while ensuring recording incompatibility with the conventional low speed recording apparatus, and
An object of the present invention is to provide an optical information recording medium and a recording device that can easily support an extended standard by utilizing a discontinuous area.

[0008]

The invention according to claim 1 is
An optical information recording medium having an address t for each sector and capable of recording, and there are two or more recording-dedicated areas adjacent to each other that the recording apparatus accesses only during a recording operation. The start address is t _n (n = 0, 1,
2, ...), and when the end address is t _{n + 1} −1, the address t is represented by t = m × i + t _n (m = 1, 2, 3, ...) For the number of sectors i from the start address t _n. The recording-only area is an area of m = 1 and m ≠ 1.
It is characterized in that

Therefore, since the recording-dedicated area includes an address discontinuity area where m ≠ 1 and physically exists, the conventional low-speed recording apparatus cannot normally access the area, so that the recording incompatibility is ensured and the reproduction is performed. Compatibility can be ensured, and it is possible to deal with the extended standard by utilizing the area of m ≠ 1.

The invention according to claim 2 is the light according to claim 1.
In the information recording medium, is there three dedicated areas for recording.
These three areas are ordered from the smallest address.
In area A₁, A_Two, A_ThreeAnd each start address is t
₁, T_Two, T_ThreeAnd t₁<T _Two<T_ThreeThe region when
A₁, A_ThreeThen, m = 1, and the intermediate area A_TwoThen m ≠
It is characterized by being 1.

Therefore, in realizing the optical information recording medium according to the first aspect, two consecutive address areas A with m = 1 are provided.
_1, by the middle of the A ₃ provided address discontinuous area A2 of m ≠ 1, to be able to ensure the most easily recorded incompatible simultaneously, it is possible to utilize the discontinuous region.

According to a third aspect of the present invention, in the optical information recording medium according to the first or second aspect, a parameter relating to the disc characteristic is provided in the address information of an area where m ≠ 1 with an interval of 1 sector or more. It is characterized in that information is recorded.

Therefore, by inserting the parameter information relating to the disc characteristic into the address information of the area where m ≠ 1, the area where m ≠ 1 is used for adding new information to the extended standard. This can be dealt with easily.

Incidentally, although address information is originally stored in each sector, if all the address information is replaced with parameter information, the corresponding area becomes an area having no address information at all. Therefore, the recording apparatus has no “mark” for accessing the corresponding area, and thus there is a high possibility that the access cannot be performed. Therefore, by making sure that the sector adjacent to the sector replaced with the parameter information is the sector containing the address information, the corresponding area can be accessed. For example, if the parameter information is replaced with 10 sectors in a row, the address for 10 sectors will be lost, and an error for 10 sectors will always be included in the access. By setting the sector with
The access error is 1 sector, and the access accuracy is improved.

According to a fourth aspect of the invention, in the optical information recording medium according to the third aspect, information relating to a method for determining the optimum recording power is recorded as parameter information relating to the disc characteristic. Characterize.

Therefore, particularly for the extended standard, by recording information relating to the method of determining the optimum recording power as parameter information, good recording characteristics can be obtained even for the extended standard of higher speed recording. Appropriate action can be taken to obtain it.

The invention according to claim 5 is the invention according to claims 1 to 4.
The optical information recording medium as described in any one of (1) to (4) above, characterized in that the medium is a direct overwritable medium having at least one phase change recording material formed as a recording layer on a transparent substrate.

Therefore, the rewritable phase change type optical information recording medium can be properly densified and recorded at high speed.

The present invention as defined in claim 6 is any one of claims 1 to 5.
In the optical information recording medium described in any one of above, the recording-only area is a trial writing area for setting a recording power.

Therefore, the trial writing area can be effectively used as a recording-only area including an area where m ≠ 1 in order to ensure recording incompatibility and reproduction compatibility.

The invention according to claim 7 is the invention according to claims 1 to 6.
In the optical information recording medium described in any one of above, the maximum recording speed specification is 12.0 to 28.8 m / s.

Therefore, the reproduction compatibility can be ensured while the recording incompatibility with the conventional low-speed recording device can be ensured, and the discontinuous area can be utilized to easily support the extended standard.
An optical information recording medium of 0 × speed specification can be provided.

The invention described in claim 8 is the invention as claimed in claims 1 to 7.
In the optical information recording medium described in any one of 1 to 3, the address information is frequency-modulated and recorded in the guide groove.

Therefore, the address information is frequency-modulated and recorded in the guide groove, which is suitable for achieving high density.

According to a ninth aspect of the present invention, there is provided an optical pickup, an optical pickup, a detection unit for detecting an area of m ≠ 1 of the optical information recording medium of the fourth aspect, and a detected area of m ≠ 1. Read-out means for reading information relating to the method for determining the optimum recording power recorded as the address information therein, and power for determining the optimum recording power based on the method for determining the optimum recording power read by the reading means. And a determining unit.

Therefore, particularly for the extended standard, the information relating to the method for determining the optimum recording power is read out from the area of m ≠ 1 recorded as the parameter information and the optimum recording power is determined based on the determination method. By doing so, high-speed recording can be performed with an appropriate recording power.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS.

[Outline] The optical information recording medium of the present invention is capable of recording and reproducing or erasing / rewriting information by using light, and is recorded on an unrecorded disc in which information is not recorded on the medium. It is necessary that the formatted address information is added. As the address information,
ATIP (Absolute Time I) of CD-R and CD-RW
n Pre-grove) simple increase time information, Double Density DDCD-R, DDCD-RW
An example is a simple increase of binary or hexadecimal numbers such as ATIP. As in these examples, the address information is basically a simple increase and is generally continuous unless it is used for a specific purpose. Further, the address is assigned to each sector which is the minimum unit, and an example of the minimum unit is a frame in CD-R / RW. Any method of pre-formatting address information may be adopted, such as a pre-pit method of forming pits on a transparent substrate or a formatting method of recording only address information as in the case of recording in an actual drive, a substrate. There is a pre-groove method that adds modulated information to the guide groove, but the ease of forming the substrate and the method of recording information and address information must be completely different (methods with different frequency bands It is preferable to use a pre-groove method that can increase the density of recorded information. Further, as the pre-groove method, it is preferable to meander (wobble) a guide groove (groove) and add the modulated information to the meander. Examples of the modulating method include frequency modulation and phase modulation. An example of frequency modulation is CD-R / R
WATIP is given as an example, and as an example of phase modulation, DVD + RW ADIP (Address In Pre-groov) is used.
e) are mentioned.

The information areas of the optical information recording medium can be classified by function. One is a user area, which is an area in which a user of the medium can freely record information, such as a program area of a CD-R / RW. In addition, there is an area for managing information, and as an example of this, there is a TO that records the contents of the program area.
C (Table of Contents), PMA in which a recording device temporarily stores information, and the like can be mentioned. These areas are areas that the recording device and the reproducing device access to reproduce the information. Therefore, in order to ensure reproduction compatibility, it is necessary to record information according to the standard to which the medium belongs in this area.

In addition to these areas, there is an area that the recording apparatus accesses as part of the recording operation. The optical information recording medium of the present invention requires at least such an area (recording-only area).

Preformatted address information also needs to be added to these areas, and the address information needs to be a simple increment address (not necessarily continuous). The recording-dedicated area that the recording apparatus accesses only during the recording operation includes an area for trial writing used to determine an appropriate recording power and a recording strategy, and examples thereof include CD-R / RW and DVD + R.
PCA (Power Calibatio) on the inner circumference of the W disk
n Area) area can be illustrated. The recording apparatus uses an OPC (Optimum) to set the optimum recording power before recording.
um Power Control) is performed, random information is recorded in the PCA area while changing the recording power at that time,
The optimum recording power can be set by reproducing the signal.

The PCA area is an area that the recording apparatus accesses only during the recording operation, and is an area that is not accessed when the reproducing apparatus or the recording apparatus reproduces information.

In order to ensure the recording incompatibility while ensuring the reproduction compatibility, it is necessary to take some measures to the area (recording-only area) accessed by the recording apparatus only during recording.

This recording incompatibility becomes important especially in a phase change type optical information recording medium using a phase change material as a recording layer material. An optical recording medium using a phase change material can record information by only intensity modulation of a single laser beam, and at the same time, reversible phase change, for example, intensity modulation only when a crystal-amorphous phase transition is used. Direct overwriting (a rewriting method that does not require an erasing process) is possible. This is because it is possible to control the rapid cooling and gradual cooling of the recording layer material by the intensity of the irradiation light. However, this recording method based only on the intensity modulation of the recording light is greatly affected by the recording speed, that is, the scanning speed of the recording beam on the medium,
In particular, at a high scanning speed, there is a drawback that it becomes impossible to create a slow cooling state and crystallization cannot be performed. That is, since the formed amorphous mark cannot be erased, direct overwrite becomes impossible.

Therefore, in order to cope with a high recording speed,
It is necessary to redesign the recording layer material from the optical and thermal characteristics. In this case, the problem is compatibility with conventional recording devices. If the recording phase material is optimized for a high recording speed, recording cannot be performed with a conventional low recording speed drive. This is because a material compatible with high speed recording requires high recording power.

As described above, when recording is performed on the optical information recording medium optimized for high-speed recording by the conventional low-speed recording apparatus, not only recording is not possible but also recording is performed with an excessively low recording power. All the amorphous marks are annealed and crystallized and erased. That is, the recorded information will be destroyed. In order to ensure the reliability of the optical information recording medium, it is necessary to ensure the incompatibility with the conventional recording device that only supports low speed.

As a method effective as this method, as described above, a discontinuity point may be provided in the address of the area accessed by the recording apparatus only during the recording operation. As an example of this, ATIP JUMP adopted in HS CD-RW
There is a law. This method is a mechanism in which an address discontinuity point is created in the PCA area to forcibly generate an error when the conventional low-speed recording drive performs the OPC operation. Such a method is a very effective means when recording compatibility is not required.

However, in the case of considering an extended standard that allows recording by the HS CD-RW recording method and further high-speed recording, if the same method is adopted, HS CD
-Recording becomes incompatible because recording cannot be performed by a recording device that conforms to the RW standard.

Therefore, the following need. Recording is not possible with conventional drives that are only compatible with low speeds (1-4x speed). Recording is possible with a drive conforming to the HS CD-RW (4-10 times speed = 12.0 to 28.8 m / s). Higher speed recording is possible with a drive that complies with the new higher speed standard.

Therefore, the PCA needs an address discontinuity point (discontinuity area).

Further, parameters relating to recording are recorded in advance on the optical information recording medium. These pieces of information need to be recorded as preformat information together with address information. Examples include CD-R, CD-R
It is ATIP extra information in W and DDCD-R / RW. These pieces of information are sent to the ATIP address in the lead-in area once in every 10 frames, and there are six types. The contents of information include various information such as information about OPC, physical information such as disk diameter, recording phase material, moment of inertia, etc., information about manufacturer and model of medium. The recording device records based on these pieces of information.

In the case of the extended standard, the compatibility problem also occurs here. In order to ensure the recording compatibility, these characteristic information must also comply with the standard before expansion, that is, the HS CD-RW standard in the above example, and therefore these information cannot be changed. On the other hand, it is necessary to newly insert the characteristic information of the medium as the preformat information in the expanded portion, that is, the parameter relating to the recording exceeding 10 times speed in the above example. As a conclusion, there is no information input area, because the information input area should not deviate from the conventional standard.

Therefore, in the optical information recording medium of the present embodiment, the area which becomes discontinuous by the ATIP JUMP method is physically present and its address is used.

[Configuration Example] First, in the recordable and high-speed recording compatible optical information recording medium of the present embodiment, an area (recording-only area) that the recording apparatus accesses only during a recording operation is designated as A. This area A is, for example, 2 as shown in FIG.
It is divided into one or more areas. In the example shown in FIG. 1, A ₁ =
There are three areas of A _n-1 , A ₂ = A _n , and A ₃ = A _{n + 1} . Here, t represents an address. Each area An
The start address of (n = 0, 1, 2, ...) Is represented by t _n , and the end address thereof is represented by t _{n + 1} −1. Therefore, 3 in the illustrated example
One area _{A n-1, A} n, when the _{A n + 1,} each of the start address-end address _{t n-1 ~t n -1,} t n ~
t _{n + 1} -1, t _{n + 1 to} t _{n + 2} -1. 1-
In an optical information recording medium of low speed specifications typified by a CD-RW for quadruple speed recording, it is not necessary to be divided into a plurality of areas in this way, and addresses are continuous with respect to the number of sectors as shown in FIG. It is a monotonic increase. On the other hand, in an optical information recording medium of high-speed specifications typified by HSCD-RW of 4-10 times speed recording, because of recording incompatibility, address discontinuities as shown in FIG. 3 are provided. In the example shown in FIG. 3, A
It means that the area ₂ does not exist on the optical information recording medium.

In any of the cases described here, the number of sectors and addresses are continuous and monotonically increasing in the area, and can be described by the following equation t = i + t _n using the number of sectors i.

Under such a premise, in the optical information recording medium of the present embodiment, as shown in FIG. 4, an area that does not originally exist in ATIPJUMP of FIG. 3 is t = m × i + t _n (m ≠ 1, m = 2, 3, ...) As an area having an address represented by (2, 3, ...) It is a discontinuous area which actually exists on the optical information recording medium. This corresponds to the discontinuity of addresses because this area is m ≠ 1. Therefore, in a recording apparatus that is compatible only with a low speed, such as a CD-RW for 1-4 speed recording, an error occurs when this area of m ≠ 1 is accessed, and recording incompatibility occurs.

On the other hand, HS CD-R for 4-10 times speed recording
In a high-speed recording device represented by W, ATIP J
Since it is compatible with UMP, it does not access a discontinuous area where m ≠ 1. Therefore, it is possible to maintain recording compatibility with the recording device.

As a typical example, as in the case of FIG. 1, the area A is composed of the three areas A ₁ , A ₂ , and A _{3 in} the ascending order of the address t (starting addresses are _{t 1} , t ₂ , and t ₃ , respectively). A simple configuration example is shown in FIG. In the regions A ₁ and A ₃ , m = 1
And m ≠ 1 in the intermediate area A ₂ . As a result, the address jump of FIG. 3 makes it possible to create (exist) the area A ₂ which does not originally exist as a discontinuous address area as shown in FIG.

In the extended standard, this m ≠ 1 area can be used for any purpose, but in the present embodiment, characteristic information peculiar to the extended standard is inserted. As the type of characteristic information, information corresponding to the expanded content, for example,
There are further strategy information, OPC parameter information, etc. at the time of high-speed recording, and examples of the OPC parameters include the parameters required for the γ method described in Orange Book. As information, CD-R / RW, DDCD-R
ATIP in the lead-in area of / RW
The same method as the extra information can be used. FIG. 6 shows an example in which the address information is replaced with other information for every 10 sectors when m = 2.

As a result, according to the optical information recording medium of the present embodiment, the expansion in which new characteristic information is added while ensuring both the recording incompatibility with the low speed recording device and the recording compatibility with the high speed recording device. An optical information recording medium compatible with the standard can be obtained.

Next, a recording apparatus 2 capable of recording on the optical information recording medium 1 compatible with high speed recording of such extended standard will be described with reference to FIG. Although not described in detail, the recording device 2 includes a laser light source that irradiates a light beam for recording or reproduction onto the optical information recording medium 1 that is rotationally driven by the spindle motor 3, an objective lens, a light receiving element, and the like. An optical pickup 4, a read signal processing unit 5 for extracting an address signal from a read signal detected by the optical pickup 4, and a demodulation process for an address signal obtained from the read signal processing unit 5. Address signal processing unit 6 and this address signal processing unit 6
Address discontinuity processing section 7 for detecting an area where the address is discontinuous m ≠ 1 based on the output of the address, and a laser light source in the optical pickup 4 based on the output signal from the address discontinuity processing section 7 And a recording device control unit 8 for performing feedback control with respect to the above. Here, in the address discontinuity processing unit 7, as a function of a detecting means for detecting an area where addresses are discontinuous m ≠ 1, and address information in the detected area where m ≠ 1 is used, for example, in FIG. And a function of a reading unit for reading information related to a method for determining the optimum recording power recorded as the characteristic information of the recording medium, and the recording device control unit 8 determines the optimum recording power read by the reading unit. The function of the power determining means for determining the optimum recording power based on the method can be executed.

In such a structure, the optical information recording medium 1 which is rotationally driven is condensed and irradiated with the light beam by the optical pickup 4, and the reflected light is received by the light receiving element to read the signal. The read signal processing unit 5 extracts only the address signal from the read signal.
The extracted address signal is demodulated by the address signal processing unit 6 to specify the address of the portion currently irradiated with the light beam. On the other hand, even if an address discontinuity occurs in the access to the area of m ≠ 1, it is recognized that the address is discontinuous due to the access to the area of m ≠ 1, and the characteristic information according to the extended standard is read by reading the address information. Is read and the information is output to the recording device control unit 8 side. As a result, m ≠ without being affected by the discontinuity of addresses.
The characteristic information corresponding to the extended standard recorded in the area 1 can be acquired, and m ≠ 1 through the control by the recording device control unit 8 or the like.
Writing processing by accessing the area (recording power P
After the setting of w), etc., the original recording process with an appropriate recording power becomes possible.

[0053]

[Examples] Examples of the present invention according to the above-described embodiment will be described. First, as shown in FIG. 8, a lower dielectric layer 12, a recording layer 13, an upper dielectric layer 14, a reflective heat dissipation layer 15 and a protective layer 16 are sequentially laminated on a transparent substrate 11 to form a CD-RW disc. A corresponding optical information recording medium 1 was created.

As the material of the transparent substrate 11, glass, resin, ceramics or the like can be adopted, but in this embodiment, polycarbonate resin is used. A spiral guide groove (groove) is transferred to the transparent substrate 11, and F is formed in the groove.
AT-IP, which is M-modulated address information, is a CD-RW
It is coded according to the Orange Book Part III volume 2 standard. However, AT in PCA
Only the IP JUMP area differs from the standard. By standard, 30 seconds (2250 frames) in the PCA area
There is a discontinuity in the time code of, but in this embodiment m
= 3, and an address represented by t = 3 × i + t2 is given. Here, the start address t2 of this area is t2 = 96: 41: 39, and this area ends at 97:11:38. At a ratio of 1 frame to 10 frames in the area, the contents equivalent to the Special Information 1 of the CD-RW standard are inserted as shown in FIG.

As the material for the lower dielectric layer 12 and the upper dielectric layer 14, any material optimized in terms of optical characteristics and thermal characteristics can be used, but it is a known material in this embodiment. A mixture of ZnS and SiO ₂ was used. The film thickness of each dielectric layer 12 and 14 is optimized from the reflectance of the medium and the recording signal characteristics. In this embodiment, the film thickness of each is 90 nm and 30 n.
m. The film was formed by a high frequency sputtering method which is a kind of vacuum film forming method.

A phase change material is used as the recording phase material forming the recording layer 13. SbTe as a phase change material
In general, an alloy is added with an additive, but in this embodiment, an AgInSbTe alloy is used as the recording layer material. The film formation was performed by a sputtering method, which is a type of vacuum film formation method, and the film thickness was set to 20 nm.

Although any metal can be used as the reflection / heat dissipation layer 15, it is common to use a metal such as Au, Ag, Cu, Al or an alloy containing an additive,
In this example, an AlTi alloy was used. The reflective heat radiation layer was formed by a sputtering method, which is a vacuum film forming method, and the thickness thereof was set to 200 nm.

The protective layer 16 plays a role of protecting each of the layers 12 to 15 from physical damage, and a resin is generally used. However, in the present embodiment, it is easy to form a film and is superior in uniformity. UV curable resin was used. The film was formed by applying a resin uniformly using a spin coat method and then irradiating it with ultraviolet rays to cure the resin.

In the optical information recording medium 1 thus prepared, the recording layer material is entirely in an amorphous state. This is because in vacuum film formation, a film is formed with high energy, so that the film is rapidly cooled. Therefore, the initialization for crystallizing the entire surface is required. In this embodiment, the high power laser was focused on the medium and scanned to initialize the entire surface.

The optical information recording medium 1 prepared in this way is
It became an HS CD-RW disc having good characteristics.

A commercially available CD is used as the optical information recording medium 1 as described above.
-Verified compatibility with RW drive. The verification method was based on whether or not recording and reproduction were possible.

The results are shown in Table 1. This makes HS CD
It was confirmed that recording / playback compatibility was ensured with the -RW, and recording incompatibility and playback compatibility were secured with the CD-RW drive that supports only low speeds.

[0063]

[Table 1]

Further, an attempt was made to extract characteristic information incorporated in the address discontinuous area where m ≠ 1. ATIP information in the area was reproduced by using Pulstec DDU1000 which is a spindle tester for CD-RW. DDU100
The track error signal of 0 was input to a commercially available ATIP decoder through a bandpass filter of 10 to 30 kHz.
As a result, the Special Informatio encoded in the outer area
I was able to successfully decode n 1. Therefore, it is confirmed that it is possible to add arbitrary characteristic information to the area.

[0065]

According to the first aspect of the present invention, there is provided an optical information recording medium which has an address t for each sector and is recordable, and the recording dedicated areas which the recording apparatus accesses only during the recording operation are adjacent to each other. Exist at two or more locations, and the start addresses of these dedicated recording areas are t _n (n = 0, 1, 2,
,), Where the end address is t _{n + 1} −1, the address t is represented by t = m × i + t _n (m = 1, 2, 3, ...) With respect to the sector number i from the start address t _n , The recording-dedicated area has an area of m = 1 and m ≠ 1.
Since the recording-only area includes the address discontinuity area that physically exists with m ≠ 1 in the recording-only area, the recording incompatibility is ensured because the conventional low-speed recording device cannot normally access. However, reproduction compatibility can be ensured, and the extended standard can be dealt with by utilizing the address discontinuous area of m ≠ 1.

According to the second aspect of the invention, in realizing the optical information recording medium of the _{first aspect} , m ≠ 1 in the middle of the two consecutive address areas A ₁ and A ₃ with m = 1. By providing the address discontinuity area A ₂ , the recording incompatibility can be secured most easily, and at the same time, the discontinuity area can be utilized.

According to the third aspect of the invention, in the optical information recording medium according to the first or second aspect, the parameter information related to the disc characteristic is expanded in the address information of the area where m ≠ 1. For the standard, this m ≠ 1
It is possible to easily cope with this by utilizing the area of 1 to add new information.

According to the fourth aspect of the invention, in the optical information recording medium according to the third aspect, information relating to the method for determining the optimum recording power is recorded as parameter information, especially for the extended standard. As a result, it is possible to appropriately cope with the extended standard for higher speed recording so that good recording characteristics can be obtained.

According to the invention described in claim 5, in the optical information recording medium according to any one of claims 1 to 4, at least one phase change recording material is formed as a recording layer on a transparent substrate. By making the medium capable of direct overwriting, it is possible to properly achieve high density and high speed recording in the rewritable phase change type optical information recording medium.

According to a sixth aspect of the invention, in the optical information recording medium according to any one of the first to fifth aspects, m ≠
The trial writing area can be effectively used as a recording-only area including the area 1 to secure recording incompatibility and reproduction compatibility.

According to the invention of claim 7, in the optical information recording medium according to any one of claims 1 to 6, the maximum recording speed specification is 12.0 to 28.8 m / s.
An optical information recording medium of the current 4 to 10 times speed specification, which can ensure reproduction compatibility while ensuring recording incompatibility with a conventional low speed recording device, and can easily support extended standards by utilizing a discontinuous area. Can be provided.

According to the eighth aspect of the invention, in the optical information recording medium according to any one of the first to seventh aspects, since the address information is frequency-modulated and recorded in the guide groove, it is possible to increase the density. It is suitable for the purpose.

According to the recording apparatus of the invention described in claim 9,
An optical pickup and m of the optical information recording medium according to claim 4.
A detecting means for detecting an area where ≠ 1, and the detected m ≠
The reading means for reading the information relating to the method for determining the optimum recording power recorded as the address information in the area 1 and the optimum recording power based on the method for determining the optimum recording power read by this reading means And a power deciding means for deciding the deciding method. Therefore, particularly for the extended standard, the information relating to the method for deciding the optimum recording power is read out from the area of m ≠ 1 recorded as the parameter information and the deciding method is decided. By determining the optimum recording power based on the above, high-speed recording can be performed with an appropriate recording power.

[Brief description of drawings]

FIG. 1 is an explanatory diagram schematically showing an address structure according to an embodiment of the present invention.

FIG. 2 is a characteristic diagram showing a relationship between the number of sectors of low speed specifications and an address.

FIG. 3 is a characteristic diagram showing the relationship between the number of high-speed-specification sectors having address discontinuous areas and addresses.

FIG. 4 is the number of sectors in an address discontinuous area where m ≠ 1
It is a characteristic diagram which shows the relationship of an address.

FIG. 5 is a characteristic diagram showing a relationship between the number of sectors and an address in the case where the area is composed of three areas including an area of m ≠ 1.

FIG. 6 is an explanatory diagram showing an information example in which characteristic information is assigned to a part of address information in an address discontinuous area where m ≠ 1.

FIG. 7 is a block diagram showing a schematic configuration of a recording apparatus compatible with an extended standard.

FIG. 8 is a cross-sectional view showing a structural example of an optical information recording recording medium.

[Explanation of symbols]

1 Optical information recording medium 4 Optical pickup 7 Detecting means, reading means 8 Optimal power determination means 11 Transparent substrate 15 recording layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 27/10 G11B 27/10 A (72) Inventor Katsuyuki Yamada 1-3-6 Nakamagome, Ota-ku, Tokyo F-term in Ricoh Co., Ltd. (reference) 5D029 JA01 JB16 JB18 KB03 WA02 5D044 AB01 BC02 CC04 DE38 5D077 AA23 BA30 CB02 DE13 5D090 AA01 BB04 BB05 CC01 CC02 DD03 DD05 GG16 GG17 GG21 GG26 HH01 KK03

Claims (9)

[Claims] 1. A recordable optical information recording medium having an address t for each sector, wherein there are two or more adjacent recording dedicated areas which the recording apparatus accesses only during a recording operation. When the start address of the recording-only area is t _n (n = 0, 1, 2, ...) And the end address is t _{n + 1} −1, the start address t
_The address t is represented by t = m × i + t _n (m = 1, 2, 3, ...) For the number of sectors i starting from _n, and the recording dedicated area is an area of m = 1 and m ≠ 1.
An optical information recording medium comprising: 2. The recording-dedicated area comprises three areas,
These three areas are area A in order from the smallest address.
₁ , A ₂ , A _3, and the start addresses of each are t ₁ ,
t _{2, t 3} and then when it is _{t 1 <t 2 <t 3} , a region _A 1, the _{A 3} m = 1, the intermediate area _{A 2} m ≠
The optical information recording medium according to claim 1, wherein the optical information recording medium is 1. 3. The address information of the area where m ≠ 1 has 1
The optical information recording medium according to claim 1 or 2, wherein parameter information relating to the disc characteristics is recorded at intervals of not less than a sector. 4. The optical information recording medium according to claim 3, wherein information relating to a method for determining an optimum recording power is recorded as parameter information relating to the disc characteristic. 5. The light according to claim 1, wherein the medium is a direct overwritable medium in which at least one layer of a phase change recording material is formed as a recording layer on a transparent substrate. Information recording medium. 6. The optical information recording medium according to claim 1, wherein the recording-only area is a trial writing area for setting a recording power. 7. The maximum recording speed specification is 12.0 to 28.8.
7. The optical information recording medium according to claim 1, wherein the optical information recording medium is m / s. 8. The optical information recording medium according to claim 1, wherein the address information is frequency-modulated and recorded in the guide groove. 9. An optical pickup, detecting means for detecting an area of m ≠ 1 of the optical information recording medium according to claim 4, and address information in the detected area of m ≠ 1. A read means for reading information related to a method for determining the optimum recording power, and a power determination means for determining the optimum recording power based on the method for determining the optimum recording power read by the read means are provided. Recording device.