RU2371785C2 - Record medium, record medium control information configuration method, record and reproduction method by using control information, and record medium device - Google Patents

Abstract

FIELD: information technologies.

SUBSTANCE: invention refers to method of recording the control information on a writable optical disc on the basis of control information contained in the above disc. At that, one recording layer of the above disc for storing the control information includes at least the first information block and the second information block, which are meant for recording rate and recording layer. At that, the above first information block includes record strategy parametres intended for the first type of record strategy, which is used for the above recording rate and recording layer, and the above second information block includes record strategy parametres for the second type of record strategy, which is different from the above first type of record strategy.

EFFECT: providing the copying process with high recording rate of optic discs of high density and providing mutual compatibility.

33 cl, 21 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a recording medium and, more particularly, to a method for recording control information on a recordable optical disc including at least one recording layer in which recording strategy information is included in the recorded control information, and a method for recording data from using disc management information recorded in a specific area of a recordable optical disc.

State of the art

High-density optical recording media, known as HD-DVD, is widely used to record and store high-resolution video data and high-quality audio data. The HD-DVD represents the next generation of HD-DVD technology.

Technological specifications are currently in place for the global standardization of Blu-ray Disc, including standards for Blu-ray Disc Write-once (BD-WO). Meanwhile, a re-writable Blu-ray disc, known as 1x BD-RE and currently being discussed, should be compatible with BD-RE discs, which could have higher recording speeds, i.e. BD-RE speeds of 2x and higher. BD-WO specifications for high write speeds are also being developed. Effective solutions for high-speed copying of high-density optical discs are urgently needed, and established specifications should ensure mutual compatibility.

Disclosure of invention

Thus, the present invention relates to a method for recording disk management information, which essentially eliminates one or more problems due to limitations and disadvantages of the prior art.

An object of the present invention is to provide a method for recording disc management information corresponding to a high recording speed, by which recording strategy information is included in disc management information previously recorded on a recording medium, and by which recording on a recording medium and reproduction from a recording medium can be performed based on the recorded disc information.

Another object of the present invention is to provide a data structure for configuring disk management information.

Another object of the present invention is to provide a method for recording disc management information that includes recording strategy information for copying at high recording speeds in order to achieve compatibility between such recording media.

Another object of the present invention is to provide a recording medium, a recording and reproducing method, and an apparatus suitable for use by the recording methods of disc management information mentioned above.

Additional advantages, objects, and features of the invention will be set forth in part in the following description, and in part will become apparent to those of ordinary skill in the art after studying the following description, or may be learned from the application of the invention.

The objectives and other advantages of the invention can be realized and obtained using the structure specifically specified in the description and claims, as well as in the accompanying drawings.

In order to accomplish these tasks and realize other advantages, and in accordance with the purpose of the invention, as implemented and described in detail in this application, there is provided a data structure of control information for use with a recording medium having at least one recording layer, wherein the control information includes at least one block of information intended for a specific recording speed and recording layer, characterized in that the block of information includes recording strategy parameters significant for the first type of recording strategy used for the specified recording speed and the specified recording layer, the first type of recording strategy is one of many types of recording strategies applicable for the same recording speed and recording layer.

In another aspect of the present invention, an optical recording medium includes data structure management information.

In another aspect of the present invention, the recording method includes the steps of reading at least one control information, the control information including at least one block of information for a particular recording speed and recording layer, characterized in that the information block includes recording strategy parameters for the first type of recording strategy used for the same recording speed and recording layer, the first type of recording strategy being one of a plurality of stratum types gies records applicable to the same recording layer and recording velocity, and write data to a particular recording layer with a specific writing speed based on at least one block of information.

In another aspect of the present invention, the recording method includes the steps of reading control information, the control information including a first block of information intended for a particular recording speed and a recording layer, characterized in that the first block of information includes recording strategy parameters intended for a first type of recording strategy used for a specified recording speed and a specified recording layer, wherein the first type of recording strategy is one of a plurality of types of strategies recordings applicable to the same recording speed and the same recording layer, and a second information unit for the same recording speed and recording layer includes recording strategy parameters for a second type of recording strategy other than the first type write strategies, and write data to a specific recording layer with a specific recording speed based on at least one block of information.

In another aspect of the present invention, the recording method includes the steps of reading control information, the control information including a first block of information intended for a particular recording speed and a recording layer, characterized in that the first block of information includes recording strategy parameters intended for the first type of recording strategy used for the specified recording speed and the specified recording layer, and the first type of recording strategy is one of many types of strategies the first recording unit applicable to the same recording speed and the recording layer, and an additional information block for a higher recording speed of the same recording layer, and a second information block including recording strategy parameters intended for the same type a write strategy or another type of write strategy used for a higher write speed of the same recording layer, and write data to a specific recording layer with a specific write speed based on at least one inf block rmatsii.

In another aspect of the present invention, a recording device includes a controller for generating a recording command, and a recording / reproducing device for recording based on a generated recording command by reading control information, the control information including at least , one block of information intended for a specific recording speed and recording layer, characterized in that the information block includes recording strategy parameters intended for a first type of recording strategy used for a specified recording speed and a specified recording layer, wherein the first type of recording strategy is one of a plurality of types of writing strategies applicable to the same recording speed and recording layer.

It should be understood that both the previous general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide an additional explanation of the invention as set forth in the claims.

Brief Description of the Drawings

The accompanying drawings, which are included in order to provide an additional understanding of the invention, and included in this application and form part of this application, illustrate an embodiment (s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

figure 1 is a diagram of a single layer disc applicable in the present invention;

figure 2 is a diagram of a two-layer disc applicable in the present invention;

3 is a diagram of a control area in which disc management information of the present invention is recorded, illustrating an information recording format;

FIGS. 4A to 4E are diagrams of an example data structure of disc management information recorded in accordance with a first embodiment of the present invention; FIG.

5A and 5B are diagrams of an example data structure of disc management information recorded in accordance with a second embodiment of the present invention;

6, FIG. 7A and FIG. 7B, and FIG. 8 are diagrams of an example data structure of disc management information recorded in accordance with a third embodiment of the present invention;

FIGS. 9A to 9E are diagrams of an example data structure of disc management information recorded in accordance with a fourth embodiment of the present invention; FIG.

10 is a block diagram of an optical disc recording and reproducing apparatus in accordance with the present invention.

The implementation of the invention

Detailed reference will now be made to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numbers will be used throughout the drawings in such a way as to refer to the same or similar parts. For convenience of explanation, a Blu-ray disc (BD) is taken as an example of an optical disc in accordance with the present invention. However, it is understood that the concept of the present invention, which is characterized in that the optical disc has its disc management information recorded thereon, is applicable, for example, to DVD-RAM / -RW / + RW / -R / + R and the like in the same way.

In addition, despite the fact that the terms used in the present invention, if possible, are selected from currently widely known terms, some terms are arbitrarily selected by the applicant in some cases, so that their meaning is explained in detail in the following description. Therefore, the present invention should be considered with appropriate terms, the meaning of which is disclosed by the applicant.

First of all, “disc management information” in the description of the present invention means an area including various information for reproducing a disc recording or information for reproducing a disc recording. In this case, the disc management information is usually information provided in the pre-recorded area on the disc or in the relief area for the disc user by the disc manufacturer.

However, disc management information is provided not only in a specific pre-recorded area, but also in the recorded area. Disc information in a pre-recorded or embossed area can also be copied to the recorded area. And they are only exemplary.

For example, disc management information is called 'disc information' in BD or 'physical format information' in DVD-RAM / -RW / + RW / -R / + R. Therefore, it is understood that the prior art of the present invention is equally applicable to the 'physical format information' DVD-RAM / -RW / + RW / -R / + R. For convenience of explanation, the “disc information” (hereinafter abbreviated DI, ID) corresponding to the case of a Blu-ray disc (BD) is taken as an example.

Figure 1 and figure 2 are structural diagrams of optical discs in accordance with the present invention, on which a recordable optical disc is an optical disc applicable in the present invention. In addition, the recordable disc may be any rewritable optical disc, a write-once optical disc, and the like.

Figure 1 is a structural diagram of a single layer disc having one recording layer, in accordance with the present invention.

Referring to FIG. 1, an initial region is provided as a control region in an inner circumference of an optical disc, while a final region is provided as a control region in an outer circumference of an optical disc. Specifically, the pre-recorded region and the rewritable region and the write-once region are separated from each other in the inner circumference of the disc.

A prerecorded area is an area (called a 'embossed area') in which data has already been recorded in the manufacture of the disc, while the user or the system cannot write data to the prerecorded area at all. In BD-RE / WO, a pre-recorded area is called a PIC area, PIDU (permanent information and control data). And the disc information described above (hereinafter referred to as ID) as information necessary for recording a disc is recorded in the PIDU area.

In the data area are provided: a user data area in which real user data is recorded, and ISA and OSA spare areas to replace the defective area that has formed. Specifically, TDMA, an OVD (temporary defect management area) for recording defect information and general management is provided on a write-once optical disc such as BD-WO. In the case of a rewritable BD (BD-RE), the ATS is optional, so that this area remains as a spare area.

The present invention provides a method for efficiently recording disc information (ID) as control information necessary for reproducing a disc recording in a pre-recorded or rewritable area. It is understood that a recording method in a pre-recorded area is applied differently to each type of disc. In the case of BD-RE / WO, the PID region as a pre-recorded region is recorded using two-phase high-frequency modulated signals, while the high-frequency modulated signals in the corresponding region are reproduced in accordance with a specific reproduction method, and information is obtained from the reproduction signal.

Figure 2 is a diagram of a two-layer disc having two recording layers, in which a recording layer starting in the initial region is called the first recording layer, layer 0, and a recording layer ending in the output region is called the second recording layer, layer 1.

In a two-layer disc, the PIDU region is provided in the start and end regions of the inner circumference of the disc, and disc information (ID) of the same content is recorded in the PIDU region.

FIG. 3 is a structural diagram of a PIDU region on a disc shown in FIG. 1 or FIG. 2. As mentioned in the previous description, this means that the information can be reordered as the structure of the PIDU region in FIG. 3 when all the information in the high-frequency modulated PIDU region is obtained.

The method for configuring disk information (ID) in the PID area is explained in detail below.

In BD-RE / WO, 'one cluster' represents a minimum recording unit, five hundred and forty-four clusters are connected to form one fragment as one top-level recording unit, and five fragments are connected to form the PIDU region. The disc information is recorded in the head cluster of the first fragment IF0, FI0 (piece of information). The disc information is repeatedly recorded in the recording layer and at a recording speed permissible by the corresponding optical disc, and one portion of the disc information includes one hundred and twelve bytes. Specifically, disk information composed by 112 bytes is called a disk information frame (ID). In addition, the same contents of the disk information are re-recorded in each head cluster of the remaining fragments, thus making it possible to copy it in case of loss of disk information.

Information representing the corresponding recording layer, information representing the recording speed, and recording strategy information corresponding to the recording speed are recorded in each disc information. Moreover, such information is used when playing back the recording of the corresponding optical disc, thus making it possible to provide optimal recording power for each recording layer and for each recording speed.

Namely, the disc information (ID) of the present invention is characterized in that it provides specific recording speed information supported by the corresponding disc and related recording strategy information, and more specifically, provides a specific recording speed supported for each recording layer and related strategy information recording by predetermined methods when there are many recording layers in the corresponding disc.

And the specific configuration of the disc information (ID) refers to the configuration of the disc information of Blu-ray (BD). It is also understood that a DVD-based disc may have a configuration different from the above structure. Specifically, if the amount of disk information (ID), for example, corresponds to the amount of BD, this is equivalent to 112 bytes. However, when considering the disc information (ID) of the same recording layer as one information in order to provide once without repeating the general information, it is possible to configure a recording strategy that is different for each recording speed, only additionally.

Various embodiments for a method of configuring disc information and a method for recording specific information and the like in disc information in accordance with the present invention are explained in detail below with reference to the accompanying drawings.

4A to 4E are diagrams of recording disc information of a particular disc in accordance with a first embodiment of the present invention, in which one of a plurality of types of write strategies (WS, C3) defined by a specification is recorded in the corresponding disc information.

Fig. 4A depicts a concept of recording disc information of an optical disc in accordance with a first embodiment of the present invention.

Referring to FIG. 4A, a plurality of kinds of disc information are recorded on a disc, the recording sequence of each disc information being determined by the sequence number and the recording sequence being recorded using 1 byte. For example, the corresponding information is recorded in the 5th byte in the disk information, which is called the field 'ID frame sequence number in the ID block', and is abbreviated as '00h, 01h, 02h, 03h ....'.

Namely, the 5th byte information is determined as follows. First of all, if the 5th byte information is '00h', '00h' means the 1st disc information, as well as the speed disc information of the 1stx first recording layer, layer 0. '01h' means the 2nd disc information, as well as the information speed disk 1x of the second recording layer, layer 1. '02h' means the 3rd disk information, as well as information of the speed disk 2x of the first recording layer, layer 0. And '03h' means the 4th disk information, as well as information of the 2x speed disk second recording layer, layer 1.

Therefore, the disc information is preferably arranged in order of recording speed, and then configured in the order of recording layers. However, this is only an approximate location. In contrast, the order of the recording layer may be preferred relative to the order of the recording speed when configuring the kinds of disc information.

In addition, the interaction of the write strategy (SZ) with the write speed, indicated by the corresponding disc information, is recorded in a specific area, for example, an area called the 'write strategy settings' field, as bytes L through 111 in the disc information. And identification information that makes it possible to identify the type or type of a recorded write strategy (SZ) recorded in bytes from the L-th-111th is recorded in another specific area, for example, an area called the 'write strategy type' field, as the N-th byte in disk information.

Given the contents of the 'write strategy (SZ)', the characteristics of the environment of the recording layer are usually modified by applying a laser beam to the recording layer in the optical disk using a puller ('11' in FIG. 10) to record it. Therefore, the intensity (recording power) of the laser beam, the recording pulse, the time of applying the recording power to the recording layer and the like should be selected. The various types of recording strategies defined above are generally referred to as a 'write strategy (SZ)', specific content recorded in a specific 'write strategy (SZ)' is called 'write strategy parameters (SZ)'.

Recording strategy (SOC) information used in the present invention means all information associated with a recording strategy (SOC). And the SZ parameters mean elements and specific digital values that configure the SZ, and are some type of SZ information. Therefore, the SZ information implements the inclusive concept of including the described above 'SZ type', 'SZ flag', which will be explained later, and the like, as well as SZ parameters.

Moreover, the recording strategy (SZ) can be recorded in various ways. Since the disk becomes very compact and must rotate at a higher speed, this significantly affects the recording speed, i.e. RPM, OM (revolutions per minute) of a disk, and also characteristics of the environment of a layer of record. Therefore, a more accurate system is required. Below is an example of a description of various write strategies (SZ), i.e. types of SZ.

First of all, there is a system having the number of recording pulses less by 1 than the size (n) of the mark formed in the recording layer, which may be called '(n-1) SZ'. For example, if the label has a length of 7T, it requires 6 pulses to form 7T in accordance with '(n-1) S3'. In this case, the time of each recording pulse or the recording power level is determined using the recording strategy parameters recorded in the corresponding disc information. Secondly, there is a system having the number of recording pulses equal to half the size (n) of the recording mark, which can be called 'n / 2 SZ'. For example, if the label has a length of 7T, it requires 3 pulses to form 7T in accordance with '(n / 2) SZ'. That is, the fractional part of the result is discarded and only integer numbers of pulses are used. In this case, the time of each recording pulse or the recording power level is determined using the recording strategy parameters recorded in the corresponding disc information. The corresponding parameters of the recording strategy for each type of strategy can have different values relative to each other. In addition, considering various types of write strategies (SOS), when different systems exist, a write strategy (SZ) exists as parameters applied to write strategies (SZ) that are different from each other, the disc manufacturer tests the recording power in accordance with the write strategy ( SZ), and then writes the test result in the field 'SZ parameters' bytes from the L-th to the 111th in the disk information, and information of the SZ type in the N-th byte.

If there are N types of write strategies (SZ), the identification information assigns a specific recognition value to each write strategy (SZ) to determine as follows. For example, '0000 0001b' means 1st SZ (write strategy-1 or SZ-1). '0000 0010b' means 2nd SZ (write strategy-2 or SZ-2). 'XXXXX XXXXXb' means the Nth C3 (write strategy-N or C3-N).

In the present invention, the first SZ (SZ-1) is determined using the above ('(n-1) SZ', and the second SZ (SZ-2) is determined using the '(n / 2) SZ'.

In addition, if the 'Sz type' field is set to '0000 0000b', it can be defined as meaning that a specific Sz type does not exist, just like the SZ parameters in the disk information. Namely, the “Sz type” field of the Nth byte can be used as information indicating that the SZ parameters do not exist, as well as information indicating the SZ type.

4B shows an example of recording disc information for a specific recording strategy (SOC), in which the manufacturer of the disc selects to record the 1st SOC (SZ-1) from various specifications when writing a recording strategy (SOC) for a speed of 1x in the information drive speed 1x the first recording layer.

Namely, if the 'SZ type' field of the Nth byte of disk information is '0000 0001b', the value of the 1st SZ (SZ-1), the parameter values corresponding to SZ-1 are recorded in the 'write strategy parameters' field in bytes c L-th-111th.

Therefore, when the disc manufacturer chooses to record the 2nd SZ (SZ-2), '0000 0010b' is written in the 'write strategy type' field, and the parameter corresponding to the 2nd SZ will be written in bytes from the L-th 111th. The parameters recorded in bytes from L-th-111th have different values relative to each other in accordance with the type of write strategy (SZ). And the corresponding parameters of the write strategy (SZ) are defined earlier as the set information corresponding to the characteristics of the disk and will be provided to the manufacturer of the disk or the system developer.

4C-FIG. 4E depict specific embodiments for a method of recording a recording strategy defined above (SOC) in disc information. Figs. 4C and 4D depict a method in which a recording strategy is selectively selected for optional recording for all recording layers and recording speeds in the manufacture of a disc. And FIG. 4E depicts a recording method of a previously determined recording strategy (SOC) in a mandatory manner in the case of a specific recording speed.

For ease of explanation, the applicant assumes that the disc includes a double layer and that for each recording layer a speed of 1x (1X) and a speed of 2x (2X) are applicable.

Fig. 4C depicts a case where it is possible to selectively record different recording strategies (SZ) in all recording layers and at all recording speeds. For example, speed disk information 1x of the first recording layer, layer 0, is recorded in '00h' as a sequence of disk information, and the 1st SZ (SZ-1) is selected to be recorded as a write strategy (SZ). The speed disk information 1x of the second recording layer, layer 1, is recorded in '01h', and the 2nd SZ (SZ-2) is selected to be recorded as a writing strategy (SZ). Information of the speed disk 2x of the first recording layer, layer 0, is recorded in '02h', and the 1st SZ (SZ-1) is selected to be recorded as a writing strategy (SZ). And the information of the speed disk 2x of the second recording layer, layer 1, is recorded in '03h', and the Nth NW (NW-N) is selected to be recorded as a write strategy (NW). In this case, the parameters of the write strategy for the 1st SZ (SZ-1), for example, the type of write strategy (n-1) used for the speed 1X of the first recording layer (layer 0), can have different values from the values used for the speed 2X the first recording layer (layer0).

FIG. 4D depicts another example of enabling selectively recording a write strategy (SZ) in which the same type of write strategy (SZ) is applied to the disc information of all recording layers and recording speeds. In this case, the parameters of the recording strategy for a particular recording layer and / or recording speed may have values different from those for another recording layer and / or recording speed, respectively.

Namely, since it is possible to write a write strategy selectively, the disc manufacturer makes it possible to apply one of the most reliable write strategies (SZ) in the same way for all disk information. And FIG. 4D illustrates the case when the 1st SOC (SZ-1) is recorded in all the disc information.

Fig. 4E depicts a method for recording a write strategy (SZ) previously determined in a mandatory way in the case of a specific write speed and write strategy (SZ), selectively in the case of the rest of the write speed. Typically, a write strategy (SZ) for a 1x speed is the most important write strategy, the specific method of which was previously selected using a specific solution, and the disc manufacturer makes it possible to selectively record the remaining recording speeds, with the exception of 1x speed. However, in the case of a high-speed disc, it is understood that the recording speed selected without fail can be 2x speed, 3x speed or the like, as well as 1x speed.

For example, if the type of write strategy (SZ) required for 1x speed is 1st SZ (SZ-1), disk information for speed 1x of the first recording layer is recorded in '00h' and '01h' as a sequence of disk information, and 1 1st SZ (SZ-1) must be recorded as a recording strategy in a mandatory way. The disc information for speed 2x of the first recording layer is recorded in '02h' and '03h', and the 2nd SZ (SZ-2) is selected to be recorded as a write strategy (SZ), which can be selectively recorded. Therefore, if the type of write strategy (SZ), mandatory for 1x speed, is equal to the 2nd SZ (SZ-2), it is clear that the 2nd SZ (SZ-2) must be written in the obligatory way, as well as '00h' and '01h' as a record of a sequence of information of a disc of information of a speed disc 1x in a second recording layer.

When applying the case of FIG. 4E, one of a plurality of predetermined recording strategies is equally recorded as a write strategy (S3) of 1x speed in a mandatory manner, thereby making it possible to save more recording characteristics of the disc. And the disc manufacturer makes it possible to selectively write the same one of the many preset recording strategies for the remaining recording speeds, with the exception of 1x speed, and the time of the disc manufacturing process can be reduced.

In addition, in the specific case of FIG. 4E, it is also possible to record a mandatory write strategy (SZ) for a speed of 1x, and the disc manufacturer also makes it possible to selectively write another write strategy (SZ) separately for a speed of 1x. In this case, the disc information for speed 1x may include disc information including a predetermined mandatory recording strategy (SOC) and other disc information including a selective recording strategy (SOC). This will be explained in detail later in the description of the third embodiment of the present invention.

FIGS. 5A-5C are diagrams of another example of recording disc information in accordance with a second embodiment of the present invention, in which “applicable recording speed information” and “information of a recording layer existing in the disc” are recorded in the corresponding disc information, as well as one of the many types of write strategies (SZ) defined by the specification.

Referring to FIG. 5A, the 'ID frame sequence number in the ID block' is provided in the 5th byte of each disk information to mean a sequence, which means that the disk information is configured in a specific sequence in the same manner as FIG. 4A. In this case, the 'write strategy type (SZ)' field is provided for a specific area (Nth byte) in the disc information for recording the SZ type applied to the corresponding disc information.

In addition, the recording speed information applicable by the corresponding disc is recorded in a specific area (Mth byte) in the disc information, which is called the 'recording speed flag' field.

For example, whether a particular write speed of eight types of write speeds is applicable by the corresponding disk, is represented by each 1 bit in the same area having 1 byte assigned to it. Namely, it can be determined that the corresponding write speed is not applicable (not supported) if the bit value is '0b' in all bits, or that the corresponding write speed is applicable (supported) if the bit value is '1b'. Therefore, each of the b0-b7 bits in 1 byte becomes flag information indicating the presence or absence of applicability of a particular write speed.

For example, if only 1x speed is applicable by the corresponding disc, '0000 0001' is written in the Nth byte. If all eight types of speeds are applicable, '1111 1111' is written in the Nth byte.

In the above explanation, the 1x and 2x speeds used by almost every drive are previously selected accepted. However, the recording speeds selected using the specification can be used as the rest of the writing speeds from the 3rd recording speed. For example, you can set the 3rd, 4th, 5th, 6th, 7th and 8th recording speeds (3rd X, 4th X, 5th X, 6th X, 7th X, 8th X) at speeds of 5x, 6x, 8x, 12x, 14x and 16x, respectively.

Meanwhile, the information of the recording layer indicating the number of the layer (s) of the recording existing in the corresponding disc is recorded in another specific area (L-th byte) in the disc information, which is called the field 'record layer number'. For example, a value denoting the number of record layer (s) can be represented using a binary number in the same area with 1 byte assigned to it. In the case where the recording layer is the only layer in FIG. 1, '0000 0001' is recorded in the Lth byte. In the case where the recording layer is a double layer in FIG. 2, '0000 0010' is recorded in the Lth byte. In the case where there are four recording layers, '0000 0100' is recorded in the L-th byte.

Since there is a restriction on the number of the recording layer (s) currently under consideration, which is currently equal to two recording layers, 4 bits in the L-th byte are sufficient to represent all fifteen recording layers (in the case of '1111'). In this case, it is understood that other suitable information may be recorded in the remaining area (4 bits) of the Lth byte.

In addition, the specific field 'write strategy parameters (SZ)' contained in the field 'type of write strategy (SZ)', the value of the Nth byte, is provided in another specific area (bytes from Pth to 111th) so that write related information in it.

Therefore, from the “recording speed information” in the Mth byte and the “recording layer information” in the Lth byte recorded above, the recording reproducing apparatus (Fig. 9) recognizes how many kinds of disc information exist on the corresponding disc. Namely, the amount of existing disc information is found by multiplying the number of applicable recording speeds by the number of recording layers.

Since the present invention applies one write strategy (SZ) to a specific recording speed and a specific recording layer, the type (type) and number of write strategies (SZ) may not be taken into account when selecting disk information. However, in a third embodiment of the present invention (FIG. 6 - FIG. 8), it will be described that a plurality of recording strategies (SOCs) may exist for a particular recording speed and a specific recording layer. In this case, the full amount of existing disc information is not always found by multiplying the number of applicable recording speeds by the number of recording layers. This will be explained in detail later in FIG. 6.

Therefore, the sequence of the plurality of types of disc information selected above is selected using sequence numbers that are recorded in the 5th byte in the previous description, and each disc information indicates a previously selected recording speed and recording layer using the sequence.

For example, if you know that there are four write speeds applicable by the disc if the Nth byte is '0000 1111', and that there are two layers of recording in the disc if the Lth byte is '0000 0010', all eight kinds of information are required drive, so the sequence will be '00h-07h'. And earlier it was decided that the types of disc information '00h', '01h', '02h', '03h', '04h', '05h', '06h' and '07h' belong to '1x speed, 1st recording layer ',' speed 1x, 2nd recording layer ',' speed 2x, 1st recording layer ',' speed 2x, 2nd recording layer ',' speed 3x, 1st recording layer ',' speed 3x, 2nd recording layer ',' 4x speed, 1st recording layer 'and' 4x speed, 2nd recording layer '.

Therefore, in order to obtain disc information for a specific target recording speed and a specific target recording layer, the recording reproducing apparatus (FIG. 10) is facilitated to check which disc information is associated with a specific target recording speed and a specific target recording layer from the 'recording speed information' The nth byte and the 'recording layer information' of the Lth byte shared with the corresponding kinds of disc information, instead of playing back with checking all kinds of disc information.

FIG. 5B shows an example of recording disc information in accordance with a second embodiment of the present invention in FIG. 5A. You can find out that there are two (1X, 2X) applicable write speeds from the Mth byte ('0000 0011b'), jointly recorded in all kinds of disc information, and that there are two recording layers in the disc, from the Lth byte ( '0000 0010b').

Therefore, in the example of FIG. 5B, there are only four kinds of disc information (two recording layers * two recording speeds), and the sequence of pieces of disc information becomes' 00h '(1X, L0) -' 01h '(1X, L1) -' 02h '(2X, L0) -' 03h '(2X, L1). This is done using predetermined content in accordance with a predetermined sequence. Therefore, all kinds of disc information must be configured in accordance with the above method in order to allow backward compatibility for use.

The built-in write strategy (SZ) is recorded in each disc information. Specifically, information such as a write strategy (S3) recorded in bytes from Pth to 111th in the corresponding disc information is recorded in the Nth byte. Namely, the types of information in the Nth byte and the bytes from the Pth-111th may differ in each disc information, which means that the disc manufacturer makes it possible to selectively record one of a plurality of SOCs.

In the example in FIG. 5, B '00h' (1X, L0) and '01h' (1X, L1) refer to the application of the first type of write strategy (SZ-1), and '02h' (2X, L0) and '03h' (2X, L1) relate to the application of the second type of write strategy (SZ-2).

Fig. 5C depicts another example of recording disc information in accordance with a second embodiment of the present invention in Fig. 5A. You can find out that there are eight (1X, 2X, ..., 16X) applicable recording speeds from the Mth byte ('1111 1111b') co-recorded in all kinds of disc information, and that there are four recording layers in the disc, from L byte ('0000 0100b').

Therefore, in the example of FIG. 5C, there are only thirty-two kinds of disc information (four recording layers * eight recording speeds), and the sequence of pieces of disc information becomes' 00h '(1X, L0) -' 01h '(1X, L1) -' 02h '(1X, L2) -' 03h '(1X, L4) -' 04h '(2X, L0) - ... -'31h' (16X, L4). This is done using predetermined content in accordance with a predetermined sequence. Therefore, all kinds of disc information must be configured in accordance with the above method in order to allow backward compatibility for use.

In another example of FIG. 5C, if the recording reproducing apparatus (FIG. 10) is intended to search for disc information associated with a 2x (2X, L0) speed in the corresponding disc information in order to record using the write strategy (C3) in the corresponding disc information , it can be learned from the types of information that there are thirty-two types of information (four recording layers * eight data rates) on the corresponding disc in accordance with a sequence of pieces of disc information such as '00h' (1X, L0) - '01h' (1X, L1) - '02h' (1X, L2) - '03h' (1X, L4) - '04h' (2X, L0) - ... -'31h '(16X, L4). Therefore, the recording reproducing apparatus (Fig. 9) makes it possible to recognize that the desired disc information associated with the 2x (2X, L0) speed of the first recording layer is '04h', and that the corresponding disc information ('04h') is recorded as the first type of write strategy (SZ-1), from the identification information of the type of write strategy (SZ) ('0000 0001b') recorded in the Nth byte in the corresponding information ('04h'), thus, reading the parameter values of the first type of write strategy (SZ-1) through bytes from R-go-111th to use when recording.

In the same way, if you intend to search for disc information related to the 16x (16X, L3) speed of the fourth recording layer in order to record using the write strategy (C3) in the corresponding disc information, the recording reproducing apparatus (FIG. 9) recognizes that the corresponding disc information is '31h', by the same process, and that the type of write strategy (SZ) is equal to the second type (SZ-2), thus making it possible to use them when recording.

6 to 8 illustrate a method of recording disc information of an optical disc in accordance with a third embodiment of the present invention. A second embodiment of the present invention is characterized in that at least one write strategy (SOC) is configured for the same write speed / layer. Namely, there may be many kinds of disc information associated with the same recording speed / recording layer, classified using S3 types, respectively.

6 depicts a concept of a method of recording disc information of an optical disc in accordance with a third embodiment of the present invention.

Referring to FIG. 6, each sequence for disc information is selected using the sequence number and recorded using 1 byte.

For example, the information recorded in the 5th byte in the disc information is called the 'ID frame sequence number in the ID block' and is briefly represented using '00h, 01h, 02h, ...'.

Namely, if the information of the 5th byte is equal to '00h', this means the 1st information of the disk. If the information of the 5th byte is equal to '07h', this means the 8th information of the disk.

When configuring disc information, the present invention is characterized in that disc information is separately provided for each recording speed, for each recording layer and for each recording strategy (SOC), and that the configuration sequence of the plurality of discrete types of disc information provided is uniformly selected according to a predetermined method.

For example, if the corresponding optical disc includes two recording layers and there are many types of SOCs, the types of disc information can be configured as follows.

The '00h' of the 1st disc information is associated with a speed of 1x, the 1st recording layer, L0, and SZ1. The '01h' of the 2nd disc information is associated with a speed of 1x, the 1st recording layer, L0, and SZ2. The '02h' of the 3rd disk information is associated with the speed 1x, the 2nd recording layer, L1, and SZ1. The '03h' of the 4th disc information is associated with a speed of 1x, a 2nd recording layer, L1, and SZ2. The '04h' of the 5th disc information is associated with a 2x speed, the 1st recording layer, L0, and SZ1. The '05h' of the 6th disc information is associated with a 2x speed, the 1st recording layer, L0, and C3. The '06h' of the 7th disc information is associated with a 2x speed, a 2nd recording layer, L1, and C3. And the '07h' of the 8th disc information is associated with a 2x speed, a 2nd recording layer, L0, and C3.

Namely, when configuring the disc information, the third embodiment according to the present invention is characterized in that at least one disc information is configured for each recording speed, respective kinds of disc information for each recording speed are configured for each recording layer, and, according to at least one type of SOC is provided for each recording layer.

Therefore, when configuring disc information for the same recording speed / recording layer, it is possible to configure many kinds of disc information in accordance with types of SOC.

FIG. 7A illustrates, by way of example, a method for configuring disc information in accordance with a third embodiment of the present invention in FIG.

Referring to FIG. 7A, an 'ID frame sequence number' is provided in the 5th byte of each disk information to mean a sequence, which means that the types of disk information are configured in a particular order (recording speed - recording layer - SOC type) of priority in Fig. .6.

And the field 'write strategy type (SZ)' (Nth byte), the field 'write speed flag' (Mth byte), the field 'record layer number' (Lth byte) and the field 'write strategy parameters' ( bytes from Pth-111th) are written in Nth, Mth, Lth and Pth-111th bytes, respectively. The content of each information recorded in the fields is the same as the second embodiment (FIG. 5A).

In FIG. 7A, a “write speed flag = 0000 0111b” Mth byte means that three types of write speeds are applicable. And 'the number of record layers = 0000 0010b' of the Lth byte means that there are two record layers.

In addition, information informing about the type of write strategy (SZ) applicable by the corresponding disc through the specification is recorded in another specific area (Kth byte) in the disc information, which is called the 'write strategy flag (SZ)' field. For example, whether a particular write strategy (SZ) of eight types of write strategies (SZ) is applicable by the corresponding disk, it is represented with each 1 bit in the same area having 1 byte assigned to it. Namely, it can be determined that the corresponding write strategy (SZ) is not applicable (not supported) if the bit value is' 0b 'in all bits, or that the corresponding write strategy (SZ) is applicable (supported) if the bit value is' 1b '. Therefore, each of the b0-b7 bits in 1 byte becomes flag information indicating the presence or absence of applicability of a particular type of write strategy (SZ). For example, if only the write strategy types (SZ) from 1st to 3rd, from Sz1 to Sz3, are applicable to the corresponding disk, '0000 0111b' is written in the Lth byte. If all eight types of write strategies (SZ), from SZ1 to SZ8, are applicable, '1111 1111b' is written in the Lth byte. In FIG. 7A, '0000 1111b' is recorded in the K-th byte to allow four types of write strategies (SZ), from SZ1 to SZ4.

By recording the types of information of the Mth, Lth, and Kth bytes recorded in the disc information using the same values together with all portions of the disc information, respectively, the recording reproducing apparatus (FIG. 10) makes it easy to obtain kinds of recording speed information applicable by the respective disc about the type of recording strategy (S3) and the number of recording layers, despite the playback and disc information.

Specifically, it is possible to record all types of types of write strategy (SZ), applicable using the specifications when configuring the types of disc information. However, in this case, the number of recorded types of disc information is extremely increased. In addition, the disk manufacturer must test all types of write strategies (SZ) and write the test result in the disk information, and this becomes burdensome.

Therefore, in an embodiment according to the present invention, a write strategy (SZ), the number (m) of which is less than (n) the maximum applicable types of write strategy, is recorded for each write speed in the disc information, and the disc manufacturer further provides the option of selectively recording a specific recording strategy from a variety of recording strategies (SZ), while providing the convenience of the manufacturer of the disk, and also enable efficient recording of disk information.

7A, recording is performed at a speed of 1x (1X) using recording strategies of the 1st and 2nd types, SZ1 and SZ2, at a speed of 2x (2X) using recording strategies of the 2nd and 3rd types, SZ2 and SZ3, or at a speed of 3x (3X) using writing strategies of the 3rd and 4th types, SZ3 and SZ4.

Namely, it is possible to record disk information using the types (two types) of write strategies (SZ) smaller than all types (four types) of write strategies (SZ) for each write speed. And you can confirm or check the built-in write strategy (SZ), applicable to each disk information through the field 'type of write strategy (SZ)' (N-th byte) and the field 'write strategy parameters (SZ)' (bytes from P-th 111th).

FIG. 7 B shows another example of recording disc information in accordance with a third embodiment of the present invention of FIG. 6. As in FIG. 7A, there are three types of applicable data rates, and '0000 0111b' is written in the Mth byte. There are four applicable types of write strategies, and '0000 1111' is written in the K-th byte. And there are two record layers in the disc, and '0000 0010b' is written in the Lth byte.

Referring to FIG. 7B, when configuring portions of disc information using one of a plurality of applicable write strategies (SOC), at least one block of disc information is configured for each of the same recording speed and recording layer. When doing this, it is most preferable that the provided disc information is defined as the preferred SOC provided by the manufacturer of the disc, and other disc information following the preferred SOC is defined as an alternative SOC.

Namely, both the disc information '00h' and the disc information '01h' refer to the speed 1x (1X) of the 1st recording layer (L0). However, type C3 recorded in '00h' as the preferably provided disc information becomes preferred C3, and type C3 recorded in '01h' as the next provided disc information becomes alternative C3.

And the disc information '04h', the disc information '05h' and the disc information '06h' refer to 2x (2X) speed and 1st recording layer (L0). However, information of type SZ2 recorded in '04h' as preferably provided disk information becomes preferred SZ, and information of type SZ1 recorded in '05h' and information of type SZ1 recorded in '06h' as the following types of information provided drive, become an alternative to SZ. Namely, they can be applied to at least three types of disc information of the same recording speed / recording layer.

In addition, disc information '10h' refers to 3rd speed (3rd X) and 1st recording layer (L0), and disc information '11h' refers to 3rd speed (3rd X) and 2 nth recording layer (L0). In the case where only one kind of type information is provided for the same recording speed / recording layer, the provided SOC becomes the preferred SZ.

Namely, when the disc manufacturer provides disc information in the disc in accordance with a previously defined specification, the optical recording reproducing apparatus (FIG. 9) reads the disc information in a specific order (recording speed — recording layer). If there are many kinds of disc information regarding the same recording speed / recording layer, the optical recording reproducing apparatus (Fig. 9) recognizes the preferably provided SOC in the disc information as the preferred SOC, and the next SOC as an alternative SOC additionally provided by the disc manufacturer, such thus enabling recording to be played back efficiently using disc information.

Even if both Sz, the preferred Sz and alternative Sz, are 'selective Sz', the disc manufacturer makes it possible to choose options, it may be possible to render the preferred Sz to 'mandatory Sz', and the alternative Sz only to 'selective Sz'.

Fig. 8 depicts another example of recording disc information in accordance with a third embodiment of the present invention of Fig. 6, in which the disc manufacturer directly provides information on the most preferred type of write strategy (SOC) with a particular recording speed.

Referring to FIG. 8, the 'write strategy type (SZ) field' (Nth byte), the 'write speed flag' field (Mth byte), the 'write strategy flag (SZ)' field (Kth byte) , the field 'record layer number' (Lth byte) and the field 'write strategy parameters' (bytes from Pth-111th) are recorded in Nth, Mth, Kth, Lth and P -th-111th bytes, respectively. The content of each type of information recorded in the fields is the same as the content of the second embodiment (FIG. 7 B).

And the field 'flag of the best SZ in the recording speed' is provided to another specific area (Qth byte) in the disk information, while the disk manufacturer provides information on SZ indicating the best quality among the many recording strategies (SZ) that exist for each one and same write speed. For example, FIG. 8 shows that the 2nd SOC (SOC2) is the “best SOC” of the eight applicable SOCs with a particular recording speed.

When it is assumed that a plurality of SOCs exist for the same recording speed / recording layer as in FIG. 7A, the optical recording reproducing apparatus (FIG. 10) is not able to distinguish which SOC is most suitable for the corresponding recording speed. Therefore, the optical recording reproducing apparatus calculates the optimal SOC using all the SOCs provided in the disc information. However, by providing the 'flag best SOC in write speed' field in the Qth byte, it is preferable to use the SOC recorded in the Qth byte.

In the case where there are many SOCs for the same recording speed / recording layer, as in FIG. 7B, it is possible to recognize the SOC recorded in the 1st disc information as the preferred SOC using the previously described selected method. However, by providing the 'best SOC in write speed flag' field in the Qth byte, the preferred SOC can also be re-confirmed. In addition, in the case where the preferred SOC recorded in the 1st disc information for the same write speed / recording layer is different from the 'best SOC flag in the write speed' information of the Qth byte, for example, if the preferred SOC is 'mandatory SZ', selected in the mandatory way, give priority to the Qth byte information provided by the disk manufacturer, thus making it possible to provide information more efficiently when choosing the optimal SZ with the same write speed.

9A to 9E are diagrams for recording control information in accordance with a fourth embodiment of the present invention. The recording of control information depends on the recording method, for example, CLV mode, PLC (constant linear velocity) or CAV mode, CCP (constant angular velocity), in which information intended to identify the type of disc information, such as PLC mode or CCP mode, is recorded in disk information with other information that makes it possible to identify the type of finally used recording strategy (SZ).

Referring to FIG. 9A, information enabling identification of a type of write strategy (SOC) has been selected to be used by a disc manufacturer, while information intended to identify a type of disc information makes it possible to identify whether the corresponding disc information is PLC mode or PUS mode. For example, as mentioned in the previous description, various recording strategies that may exist, such as (n-1) SZ, n / 2 SZ, etc., are defined as the 1st SZ SZ-1, 2- SZ NW-2 and K-NW SZ-K. And information identifying the type of write strategy (called 'SZ type') selected by the disk manufacturer is recorded in the disk information.

FIG. 9B is a diagram of a recording strategy recording strategy information in accordance with a fourth embodiment of the present invention in FIG. 9A, and FIG. 9C is a diagram of another example recording strategy recording strategy in a control information in accordance with a fourth embodiment of the present invention in FIG. 9A.

Fig. 9B shows that the disc manufacturer selectively records a specific recording strategy (SOC) for all recording speeds when recording one of a plurality of recording strategies (SOC).

Referring to FIG. 9B, the Nth byte of the disk information indicates the type of disk information, the Pth byte of the disk information indicates the type of write strategy (S3), and the parameters associated with one write strategy (S3) selected by interacting with N -th and P-th bytes, write in bytes from the L-th - 111-th.

For example, disc information for a speed of 1x of the 1st recording layer is recorded in '00h' as a sequence of disc information, the type of disc information means the PUE mode, the type of write strategy (SZ) means the 1st SZ SZ-1, and the write strategy (SZ) interacts with them in such a way that SZ-1 CCP is selected for recording. The disc information for the speed 2x of the 1st recording layer is recorded in '01h', the type of disc information means PLC mode, the type of write strategy (SZ) means the 1st SZ SZ-1, and the write strategy (SZ) interacts with them in this way that SZ-1 PLC is selected for recording. The disc information for the speed 4x of the 1st recording layer is recorded in '02h', the type of disc information means PLC mode, the type of write strategy (SZ) means the 2nd SZ SZ-2, and the write strategy (SZ) interacts with them in this way that SZ-2 PLC is selected for recording. The disc information for the speed 8x of the 1st recording layer is recorded in '03h', the type of disc information means the CCP mode, the type of recording strategy (C3) means the 2nd SZ SZ-2, and the recording strategy (SZ) interacts with them in such a way that SZ-2 PUS is selected for recording.

Fig. 9C depicts that one of a plurality of recording strategies (C3) is recorded in disc information in which a type of mandatory recording strategy (C3) is recorded for a specific predetermined recording speed (e.g., 1x speed), but the disc manufacturer selectively writes a specific recording strategy ( SZ) for other recording speeds.

Therefore, the method in FIG. 9C differs from the method in FIG. 9B in that the type of recording strategy is selected in the mandatory way by imposing restrictions on the choices of the disc manufacturer for a particular recording speed (1x speed). This enables the manufacturer of the disc recording / reproducing device (FIG. 10) to design inexpensive products using copying using only one recording strategy (S3) for manufacturing.

For example, disc information for a speed of 1x of the 1st recording layer is recorded in '00h' as a sequence of disc information, the type of disc information means the PUE mode, the type of write strategy (SZ) means the 1st SZ SZ-1, and the write strategy (SZ) interacts with them in such a way that SZ-1 CCP is selected for recording in a mandatory way. The disc information for the speed 2x of the 1st recording layer is recorded in '01h', the type of disc information means PLC mode, the type of write strategy (SZ) means the 1st SZ SZ-1, and the write strategy (SZ) interacts with them in this way that SZ-1 PLC is selected for recording. The disc information for the speed 4x of the 1st recording layer is recorded in '02h', the type of disc information means PLC mode, the type of write strategy (SZ) means the 2nd SZ SZ-2, and the write strategy (SZ) interacts with them in this way that SZ-2 PLC is selected for recording. The disc information for the speed 8x of the 1st recording layer is recorded in '03h', the type of disc information means the CCP mode, the type of recording strategy (C3) means the 2nd SZ SZ-2, and the recording strategy (SZ) interacts with them in such a way that SZ-2 PUS is selected for recording.

Fig. 9D depicts another example of recording management information in accordance with a fourth embodiment of the present invention, in which the specific identification of the CCP mode is subdivided to be applied to the 'ID type' field recorded in the Nth byte in the disc information, and in which also write information indicating the type of write strategy (SZ).

Referring to FIG. 9D, in the case where the corresponding disc information means a CCP mode, it is subdivided in such a way as to identify how many speeds are provided by a write strategy (SOC). Therefore, the field 'type ID' can be defined as follows. If the field 'ID type' recorded in the Nth byte is equal to '0000 0001b', this means that the control mode and the write strategy (SZ) recorded in bytes from the Lth to the 111th are written in such a way that only matches one type of speed. If the field 'ID type' recorded in the Nth byte is equal to '0000 0010b', this means that the control mode and the write strategy (C3) written in bytes from the Lth to the 111th are written in such a way as to correspond two types of speeds. If the field 'ID type' recorded in the Nth byte is equal to '0000 0011b', this means that the control mode and the write strategy (C3) written in bytes from the Lth to the 111th are written in such a way as to correspond three types of speeds.

In addition, the field 'type of write strategy (SZ)' is added to the Pth byte in the disk information so that the strategy for writing bytes from the Lth to the 111th is written by interacting with the type of disk information in the Nth byte and the type write strategies (SZ) in the 2nd byte. Namely, this can be determined as follows. If '0000 0000b' is written in the Pth byte, this means the 1st SZ SZ-1. If '0000 0010b' is written in the Pth byte, this means the 2nd SZ SZ-2. And, if 'XXXXX XXXXbb' is written in the R-byte, this means the K-th SZ SZ-K.

Fig. 9E is a recording strategy recording scheme in control information compatible with Fig. 9D.

Referring to FIG. 9E, '0000 0000b' is recorded in the ID type field of the Nth byte to mean PLC mode. '0000 0001b 'is recorded in the' write strategy type (SZ) type 'of the Rth byte to mean 1 SZ SZ-1. The 5th byte is equal to '00h' to mean speed disk information 1x of the 1st recording layer. And the specific write strategy (SZ), interacting with the Nth and Pth bytes, is written in bytes from the Lth to the 111th on the disk.

Since this is a PLC mode, a write strategy (SZ) for one type of speed is recorded. Since this is the first SZ SZ-1, for example, the parameters are determined using the type '(n-1) SZ'. Thus, the disc manufacturer writes the optimum value on the corresponding disc.

If the field 'ID type' (N-th byte) is set to '0000 0001b' to mean the CCP mode, or if the field 'type of write strategy (C3)' is set to '0000 0010b' to mean the second C3 C3- 2, it is understood that the recording strategy (S3) parameters recorded in bytes from Lth to 111th should be recorded as new contents other than the parameters specified in FIG. 9E or the values of the corresponding parameters.

10 is a block diagram of an optical disc reproducing apparatus in accordance with the present invention.

Referring to FIG. 10, a recording reproducing apparatus in accordance with the present invention includes a recording reproducing unit 10 performing reproduction of an optical disc recording, and a control unit 20 controlling a recording reproducing unit 10.

Industrial applicability

The control unit 20 provides a recording or playback command for a specific area, and the recording playback unit 10 performs recording / reproduction for a specific area in accordance with the command of the control unit 20. Specifically, the recording reproducing unit 10 includes an interface unit 12 communicating with an external device, a stripper unit 11 directly recording data to an optical disk or reproducing data, a data processor 13 receiving a reproduction signal from the stripper unit 11 to restore to a desired value signal, or modulating, to deliver the recorded signal to the signal recorded on the optical disk, the servo mechanism unit 14, correctly reading the signal from the optical disk, or controlling the block 11 the receiver to correctly record the signal on the optical disk, a memory 15 temporarily storing disk management information including disk management information, and a microprocessor 16 responsible for controlling the above elements in the recording reproducing unit 10.

An optical disc recording process in accordance with the present invention is explained in detail as follows.

First of all, when the optical disc is loaded into the optical recording reproducing apparatus, all disc management information on the disc is read in order to temporarily store in the memory 15 of the recording reproducing unit. Also, only specific disc management information can be read from the optical disc. And various types of disc management information are used for recording / reproducing an optical disc. Specifically, the management information stored in the memory 15 includes disk management information of the present invention. Therefore, the information of the recording layer, the information of the recording speed and the recording strategy suitable for the corresponding recording speed recorded in the disc information is read to be stored in memory.

If you intend to record a specific area on the optical disc, the control unit 20 renders this intention to the recording command, and then feeds it to the recording playback unit 10 along with data for recording the recorded location information. After receiving the write command, the microprocessor 16 decides or selects the appropriate write speed applied to the intended recording layer in the optical disk from the pieces of control information stored in the memory 15, and then executes the write command using a predefined or selected type of write strategy and write strategy parameters applicable to the resolved or selected recording speed.

Specifically, when recording to an optical disc using the present invention is performed, the disc information as control information is provided in a specific order, and the microprocessor 16 recognizes which SOC is preferred by the SOC of the disc manufacturer at the same recording speed / recording layer. Therefore, this greatly facilitates recording in a specific recording layer on an optical disc with a specific recording speed.

Thus, the present invention provides various methods for providing copying of disc management information with a higher write speed on a high density optical disc, thereby enabling uniformly applying standardized disc management information to efficiently copy by recording / reproducing the optical disc.

Those skilled in the art will understand that various modifications and changes can be made in the present invention. Therefore, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims (33)

1. A computer-readable medium comprising a data structure of control information, said computer-readable medium comprising,
at least one recording layer for storing control information including at least a first information block and a second information block for recording speed and a recording layer, said first information block including recording strategy parameters for a first type of recording strategy used for said recording speed and a recording layer, and said second information unit includes recording strategy parameters for a second type of recording strategy different from said of the first type write strategy. 2. The computer-readable medium of claim 1, wherein said control information is used to control data recording when writing said data to said computer-readable medium. 3. The computer-readable medium of claim 2, wherein the computer-readable medium is a recordable Blu-ray disc. 4. The computer-readable medium of claim 1, wherein the first information block includes identification information identifying a first type of recording strategy, and the second information block includes identification information identifying a second type of recording strategy. 5. The computer-readable medium of claim 4, wherein the identification information in the first block of information identifies one of the types of write strategy: type n-1 and type n / 2, where n is the length of the mark, and each type represents the number of write pulses to form the corresponding tags. 6. The computer-readable medium of claim 1, wherein the second information block is an alternative information block for the same recording speed and the same recording layer to which the first information block is applied. 7. The computer-readable medium of claim 1, wherein the second type of write strategy is type n-1 or type n / 2, where n is the length of the mark, and each type represents the number of write pulses to form the corresponding mark. 8. The computer-readable medium of claim 1, wherein the first type of write strategy is type n-1 or type n / 2, and the second type of write strategy is type n-1 or type n / 2, which may differ from the first type of write strategy where n is the length of the mark, and each type represents the number of write pulses to form the corresponding mark. 9. The computer-readable medium of claim 8, wherein the identification information identifies one of the types: type n-1 and type n / 2, where n is the length of the mark, and each type represents the number of write pulses to form the corresponding mark. 10. The computer-readable medium of claim 1, wherein each of the first and second blocks of information further includes identification information identifying a corresponding type of write strategy. 11. The computer readable medium of claim 1, wherein each of the first and second blocks of information further includes information of an applicable type identifying an applicable type of write strategy. 12. The computer-readable medium of claim 1, wherein each of the first and second blocks of information further includes information of the best type identifying the best type of write strategy with a particular recording speed. 13. The computer-readable medium according to claim 1, in which each of the first and second blocks of the information block further includes information of the number of the recording layer and information of the applicable recording speed of the corresponding block of information. 14. The computer-readable medium of claim 1, wherein the control information includes an additional information unit for a higher recording speed and the same recording layer, wherein the additional information unit includes recording strategy parameters for the same type a write strategy or another type of write strategy used for a higher write speed of the same recording layer. 15. The computer-readable medium of claim 14, wherein the write strategy parameters for a higher write speed and the same write layer are different from the write strategy parameters for a write speed, even if the same type of write strategy is used. 16. The computer-readable medium of claim 14, wherein the additional information unit includes identification information identifying a type of write strategy. 17. The computer-readable medium of claim 14, wherein the identification information identifies one of the types: type n-1 and type n / 2, where n is the length of the mark, and each type represents the number of write pulses to form the corresponding mark. 18. The computer readable medium of claim 14, wherein the control information includes an alternative information unit, the alternative information unit for a higher recording speed and a corresponding recording layer, includes recording strategy parameters for an alternative type of recording strategy, different from the type of recording strategy used for the additional block of information. 19. The computer-readable medium of claim 18, wherein the alternative type of write strategy is one of types: type n-1 and type n / 2, where n is the length of the mark, and each type represents the number of write pulses to form the corresponding mark. 20. The machine-readable medium of claim 18, wherein the type of write strategy for a higher write speed and write layer is one of the types: type n-1 and type n / 2, and an alternative type of write strategy is one of the types: type n-1 and type n / 2, which differs from the previous type of write strategy, where n is the length of the mark, and each type represents the number of write pulses to form the corresponding mark. 21. A recording method comprising the steps of:
at least one control information is read, the control information includes at least a first information block and a second information block for recording speed and a recording layer, said first information block including recording strategy parameters for for a first type of recording strategy used for said recording speed and a recording layer, and said second information block includes recording strategy parameters for a second type of recording strategy used o for said recording speed and recording layer, each of the first and second information blocks including identification information identifying a corresponding type of recording strategy;
at least one of the first and second blocks of information is identified based on the identification information; and
write data using the write strategy parameters contained in the identified information block. 22. The method according to item 21, in which the first type of write strategy is type n-1 or type n / 2 and the second type of write strategy is type n-1 or type n / 2, which may differ from the first type of write strategy, where n is the label length, and each type represents the number of write pulses to form the corresponding label, the identification information mentioned identifying either type n-1 of the write strategy or type n / 2 of the write strategy. 23. The method according to item 22, in which the recording step includes recording data using recording pulses smaller than the label length to form the corresponding label, if type n-1 of the recording strategy is used, and using recording pulses corresponding to half the length labels to form the corresponding label, if type n / 2 of the write strategy is used. 24. A recording method comprising the steps of:
reading control information, the control information including a first information block and a second information block for recording speed and a recording layer, said first information block including recording strategy parameters for a first type of recording strategy used for recording speed and a recording layer, and said second information unit, designed for the same recording speed and the recording layer, includes recording strategy parameters for the second type write strategies other than the first type of write strategy; and
write data to a specific recording layer with a specific recording speed based on at least one block of information. 25. The method according to paragraph 24, further comprising stages, in which
identifying at least one of the first and second blocks of information based on identification information identifying a particular type of recording strategy; and
write data in a specific recording layer with a specific recording speed based on the identified identified block of information. 26. The method according A.25, in which at the stage of identification identify at least one of the first and second blocks of information stored in memory at the said stage of reading. 27. The method of claim 25, wherein the first type of write strategy is type n-1 or type n / 2 and the second type of write strategy is type n-1 or type n / 2, which is different from the first type of write strategy, where n is the length of the mark, and each type represents the number of write pulses to form the corresponding mark. 28. The method according to paragraph 24, in which each of the first and second blocks of information further includes information of an applicable type identifying an applicable type of recording strategy. 29. A recording device comprising:
an optical puller configured to perform data recording on a data medium or reproducing data from a data medium;
a microprocessor coupled in operative condition to said optical stripper and configured to control said optical stripper to record or reproduce data based on the control information, wherein the control information includes at least a first information block and a second information block intended for a particular a recording speed and a recording layer, wherein said first block of information includes recording strategy parameters for a first type of recording strategy, and abstracted for writing speed and recording layer, and said second information unit includes write strategy parameters for second write strategy type different from said first type write strategy,
moreover, the said optical puller performs data recording based on at least one of the first and second blocks of information in accordance with the control commands of the microprocessor. 30. The device according to clause 29, in which the microprocessor is configured to select recording strategy parameters in at least one of the first and second blocks of information based on identification information identifying the first or second type of recording strategy and controlling the optical pickup data using strategy parameters. 31. The device according to clause 29, further comprising:
a memory for storing read control information;
wherein the microprocessor is configured to select recording strategy parameters in the corresponding information block based on identification information from the control information stored in the memory, said identification information identifying the first or second type of recording strategy. 32. The device according to clause 29, further comprising a control unit operably coupled to the microprocessor via an interface and configured to generate a write command and transmit said record command through said interface. 33. The device according to clause 29, in which the first type of write strategy is type n-1 or type n / 2 and the second type of write strategy is type n-1 or type n / 2, which is different from the first type of write strategy, where n - the length of the label, and each type represents the number of write pulses to form the corresponding label,
wherein said microprocessor is configured to control said optical stripper for recording data using either the parameters of the first recording strategy or the parameters of the second recording strategy included in said identified information block.

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