KR101019473B1 - Optical disc and recording method of Disc Information of optical disc - Google Patents

Abstract

The present invention relates to a method of recording disc information on a recordable optical disc, comprising: a plurality of disc information units arranged in a sequential order in a recording medium including at least two recording layers, including information relating to recording of data; And a specific area for recording the disc information, wherein each disc information unit is provided for each recording layer and recording speed, and each disc information unit includes information related to the recording layer of a predetermined recording layer in which the disc information unit is used; And WS (Write Strategy) information used at a predetermined recording speed allowable for the predetermined recording layer, wherein the plurality of disc information units are arranged in increasing order of the recording speed, and the recording layer number is within the same recording speed. It is characterized by being arranged in increasing order, through which standardized disk information can be easily Being able to use, and also has the advantage of being able to respond efficiently to the recording and playback of the optical disc.

Optical disc, disc information, location information, pointer information, recording layer information, double speed information, high density

Description

Optical disc and recording method of Disc Information of optical disc

1 shows a simplified illustration of a disk of a single layer structure to which the present invention is applied;

 2 shows a simplified illustration of a disk of a dual layer structure to which the present invention is applied;

Fig. 3 shows a part of the management area in which the disc information of the present invention is recorded, and briefly shows a form in which the disc information is recorded in the corresponding area.

4 shows a first embodiment of recording disc information according to the present invention;

Fig. 5 shows an example of recording disc information by applying the first embodiment,

Fig. 6 shows a second embodiment of recording disc information according to the present invention.

7 shows an example of recording disc information by applying the second embodiment;

8 shows another example of recording disc information by applying the second embodiment;

Fig. 9 shows an example in which the second embodiment of recording the disc information according to the present invention is extended and applied.

Fig. 10 shows a third embodiment of recording disc information according to the present invention.                 

Fig. 11 shows an example of recording disc information by applying the third embodiment,

12 shows another example of recording disc information by applying the third embodiment;

Fig. 13 shows an optical disc recording and reproducing apparatus using disc information according to the present invention.

-Description of the main parts in the drawing-

10: recording and playback section 20: control section

16: micom 15: memory

The present invention relates to a method of recording disc information on a recordable optical disc, and more particularly, to a method of recording information indicating a specific position of the disc information in the disc information, and to searching for disc information related to a desired specific recording layer and specific speed. It is about how to).

As optical recording media, optical disks capable of recording large amounts of data are widely used. Recently, new high-density optical recording media (HD-DVD), for example, Blu-ray Disc, which can record and store high-quality video data and high-quality audio data for a long time, have been developed.

Blu-ray Disc, the next-generation HD-DVD technology, is a next-generation optical recording solution that can store data that significantly surpasses existing DVDs. Recently, world-standard technical specifications have been established.

Blu-ray Disc, one of the world's next-generation HD-DVD world standards, uses a 405nm blue-violet laser, which is much denser than current DVDs with 650nm red lasers, and has a thickness of 1.2mm and a diameter of 0.1mm. A 12cm disc can hold a greater amount of data than a current DVD.

A variety of standards have been prepared for Blu-ray Discs, including the rewritable 1x Blu-ray Disc (BD-RE), followed by the write-once Blu-ray Disc (BD-WO) and the rewritable High-speed Blu-ray Disc (BD-RE). Various standards are being prepared for.

In the case of the above BD-RE, only the case where rewritable at 1x speed is discussed, it is necessary to cope with future high-speed (more than 2x) BD-RE, especially in case of BD-WO which is recently discussed. As standardization is also in progress, efficient countermeasures for high speeds in high density optical discs are urgently required, and in particular, this should be provided as standardized information to ensure mutual compatibility.

The present invention was created in view of the above situation, and aims to propose a new method for recording disc information as standardized information corresponding to high speed, in particular, to efficiently record the position of specific disc information, and from the recorded disc information. Its purpose is to carry out efficient recording and reproducing of optical discs, and has the following technical problems.

By recording the disc information corresponding to the high speed in the standardized method in the specific area of the disc, it is intended to provide mutual compatibility between the discs of the same series.

In addition, the present invention provides a method of searching for disc information that can quickly acquire contents of desired disc information related to a specific speed when recording and reproducing actual data on an optical disc using recorded disc information.

  A method of recording disk information of an optical disk according to the present invention for solving the above technical problem is a method of recording a plurality of disk information in a management area of an optical disk having at least one recording layer, the specific area of the disk information. Recording common pointer information in which the plurality of disc information all have the same value, and in the other area of the disc information, the unique recording layer information and the speed information of each disc information are recorded. Features,

 Also, a method of recording disc information of an optical disc according to the present invention is a method of recording a plurality of disc information in a management area of an optical disc having at least one recording layer, wherein a plurality of disc information is included in a specific area of the disc information. Pointer information indicating which disc information corresponds to a specific speed and a specific recording layer is recorded, and another layer in the disc information records recording layer information and speed information, which means the disc information. ,                     

In addition, an optical disc of the present invention is an optical disc having at least one recording charge having a recordable area and a pre-recorded and non-recordable area, wherein the disc information is stored in the pre-recorded area at an allowable recording layer and at a double speed. An area for separately recording pointer information in the disc information indicating which disc information among a plurality of disc information corresponds to a specific speed and a specific recording layer, and recording layer information and double speed of the disc information. Characterized in that the area for recording information is provided separately from each other,

Another optical disc according to the present invention is an optical disc having a recordable area and at least one recording charge which is pre-recorded and impossible to record, wherein the disc is allowed in the pre-recorded area by an acceptable recording layer and double speed. The information is provided separately, and common pointer information in which the plurality of disc information has the same value is recorded in a specific area in the disc information, and another disc in the disc information means each disc information. It is characterized in that the unique recording layer information and double speed information is recorded,

      Also, a disc information search method of an optical disc according to the present invention is a method for searching for a position of disc information related to a specific speed of a specific recording layer recorded in a management area of an optical disc having at least one recording layer. Common pointer information in which the plurality of disc information has the same value is recorded in a specific area in the disc information, and unique recording layer information meaning each disc information in another area in the disc information and When the optical disc on which the speed information is recorded is loaded, identifying the position of the disc information related to the specific speed of the specific recording layer to be searched from the pointer information in the disc information, and from the position of the checked disc information. Specific recording layer information and double speed information recorded in the disc information require a search. Comprises a step of determining whether a match for a particular speed of rokcheung characterized the jingeot,

In addition, the recording and reproducing apparatus of the optical disc according to the present invention includes a control unit which transmits a recording command, and when recording the recording command and performing recording according to the recording command, separately recorded for each recording layer and speed in the management area of the optical disc. A specific recording layer identified from the pointer information by reading the disc information, and also reading pointer information designating the position of the disc information related to the specific speed of the specific recording layer recorded in each disc information in common. And a recording / playback section for recording by using the recording related information WS recorded in the disk information related to the specific speed.

       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a disc information recording method and search method of an optical disc and an optical disc recording and reproducing apparatus according to the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, an optical disc will be described by taking a case of a recordable Blu-ray disc (BD-RE / BD-WO) as an example.

In addition, the terminology used in the present invention was selected as a general term widely used as possible now, but in certain cases, the term is arbitrarily selected by the applicant, in which case the meaning is described in detail in the description of the invention, the simple terminology The present invention is to be understood as a meaning of a term rather than a name.

Fig. 1 shows the structure of an optical disc according to the present invention, and an optical disc to which the present invention is applied is sufficient if a recordable optical disc is sufficient, and it can be applied regardless of whether it is an optical disc that can be rewritable many times or once.

FIG. 1 is a structure of an optical disc of the present invention, which shows a single layer structure having one recording layer, and FIG. 2 shows a case of a dual layer having multiple recording layers. The recording layer starting with lead-in in the dual layer is called the first recording layer (Layer0), and the recording layer ending with lead-out is called the second recording layer (Layer1). Therefore, the recording layer is expandable in multiple layers, and the extended recording layer will be named as the third recording layer Layer2 and the fourth recording layer Layer3, respectively.

The inner and outer peripheral areas of the disc are provided with lead-in and lead-out areas as management areas. In particular, the disc inner circumferential area is divided into a pre-recorded area and a rewritable or write-once area. . The pre-recorded area is an area that is already recorded at the time of disc creation and is no longer recordable by the user or the system. In particular, in BD-RE / WO, the pre-recorded area is called PIC (Permanent Information & Control data). In the PIC area, disc information (also referred to as "DI") is recorded as information necessary for recording a disc. The data area is provided with a user data area in which the user's actual data is recorded and spare areas (ISA, OSA) for replacing a defective area, in particular, such as a BD-WO. An optical disc that can be written once is provided with a TDMA (Temporary Defect Management Area) for recording information for disc defect management and general management. In the case of a rewritable BD-RE, TDMA is left as a reserved area because it is not necessary.

The present invention not only efficiently records speed information and recording related information (hereinafter referred to as "WS") required for recording and reproducing a disc in the pre-recorded area, but also facilitates the recording of a plurality of disc information. A method of recording positional information for acquisition.

In addition, the recording method of the pre-recorded area is differently applied to each disc type. In the case of BD-RE / WO, the PIC area as the pre-recorded area is recorded as a biphase high frequency modulated signal. The high frequency modulated signal of the corresponding area is reproduced according to a specific reproduction method, and information is obtained therefrom.

FIG. 3 briefly shows the structure of the PIC area in the disk structure shown in FIG. This means that when all the information in the high frequency modulated PIC region is acquired as described above, the information can be rearranged in the structure as shown in FIG. 3, and the PIC region is not physically recorded as shown in FIG. 3. . In the BD-RE / WO, the minimum recording unit is represented by "1 cluster", and the PIC area is divided into 544 clusters to form a fragment as one upper recording unit, and a total of five fragments ( Fragments) gather to form the PIC region. The disc information is recorded in the head cluster of the first fragment IF0. The disc information is recorded in plural numbers by the recording layer and the allowable speed of the optical disc, and one disc information is composed of 112 bytes. . Disk information composed of 112 bytes is called a disk information frame (DI frame). In addition, by repeatedly recording the same disk information in the head cluster of the remaining fragments, it is possible to cope with the loss of the disk information.

Therefore, in order to obtain disc information related to a specific speed of a specific recording layer from a plurality of disc information, it is necessary to record the position information of these disc information. For example, if there are four recording layers and four allowable speeds for each recording layer, a total of 16 disc information is required, and the recording / reproducing apparatus (Fig. 13) needs values of the disc information relating to the specific recording layer and the specific speed. There is an inconvenience of searching the entire disk information every time, and this is to be solved as the location information of the disk information.

In the present invention, two cases will be described as examples of the location information of the disc information.

The first is "recording layer information" and "speed information" having unique meanings for each disc information, and the second is position information which is commonly recorded in all of the plurality of disc information, "pointer information" (DI Frame pointer). It is also called).

That is, the first " recording layer information " and " speed information " will be unique information for each disc information directly describing the recording layer and the speed of the disc information, and the second " pointer information " The recording and reproducing apparatus (Fig. 13) is commonly recorded in the disc information so that the information can be combined to make it possible to check which disc information is related to the desired specific recording layer and the specific speed.

The present invention is characterized in that the above two kinds of information are recorded in the disc information, but it may be possible to selectively use either method in actual application.

 4 to 13, various embodiments of a method of recording location information and the like in the disc information in the present invention will be described in detail.

First, a method of recording the unique "recording layer information" and "speed information" in the disc information will be described with reference to Figs.

Fig. 4 is a diagram briefly showing the structure of the disc information for explaining the first embodiment of recording the disc information of the present invention, in which the " recording layer information " and " speed information " It is about.

In FIG. 4, the order is determined as a serial number for each piece of disc information, and this is recorded in 1 byte. For example, this information is recorded in the fifth byte of the disk information, which is named "DI frame sequence number in DI block", and is briefly expressed as "00h, 01h, 02h ---". That is, if the information of the fifth byte is "00h", it means the first disk information, and if it is "07h", it means that it is the eighth disk information. In the specific area (7th byte) in the disc information, recording layer information and double speed information in which the disc information is to be used are recorded in a specific bit. For example, recording layer information is recorded in the upper 4 bits of the 7th byte and double speed information is recorded in the lower 4 bits. The recording layer information is defined as "0000b" to mean the first recording layer (Layer0, also referred to as "L0"), and "0001b" to mean the second recording layer (Layer1, also referred to as "L1"). In this case, " 1111b " is defined as meaning the sixteenth recording layer (Layer 15, hereinafter also referred to as "L15").

In addition, the 4x information can be defined in various ways. For example, "0000b" means 1x speed, "0001b" means 2x speed, "0011b" means 4x speed, and "0111b" means 8x speed. , "1111b" is defined as meaning 16 times speed.

Therefore, the above-described method of defining the recording layer information and the speed information may be defined and used in various ways depending on the system or through the standard establishment. That is, a method of assigning and defining the recording layer information and the double speed information by 1 byte is also possible.

Therefore, as shown in Fig. 4, the unique recording layer information and the speed information corresponding to the serial number are recorded at a predetermined position (7th byte), so that the recording layer information and the speed information of the disc information can be easily obtained. The remaining bytes in the disk information, for example, the P-111th byte, can be used to record the recording power or recording parameters suitable for the recording layer and the double speed in detail. This will be possible. The record related information recorded in the P-111 th byte may be specifically referred to as "Write Strategy parameters" (hereinafter also referred to as "WS").

FIG. 5 briefly shows, for example, the disc information recorded in the case of the dual layer, in the case of representing the disc information as shown in FIG. If the optical disc has two recording layers and each recording layer requires four different speed information, a total of eight disc information is required to correspond to each double speed for each recording layer in the PIC area. The serial number is recorded in the fifth byte, and the unique recording layer information and the double speed information are allocated to the seventh byte by 4 bits. For example, if the double speed to be expressed for each recording layer is 1,2,4,8 times, respectively, in the case of FIG. 5, the first to fourth disc information is the disc information for the first recording layer of the dual layer, and thus the seventh byte. The upper 4 bits of will always be "0000b" designating the first recording layer, and the remaining lower 4 bits will mean double speed information, which is "0000b" representing 1x speed for the first disk information and 2 for the second disk information. &Quot; 0001b " for double speed, " 0011b " for four times speed for third disk information, " 0111b " for eight times speed for last fourth disk information.

Also, since the fifth to eighth disc information is the disc information for the second recording layer of the dual layer, the upper 4 bits of the 7th byte will always be "0001b" which designates the second recording layer, and the remaining high 4 bits are respectively. Means double speed information, "0000b" for 1x speed for the 5th disk information, "0001b" for 2x speed for the 6th disk information, "0011b" for 4x speed for the 7th disk information, and last. The eighth disc information was recorded as "0111b" indicating eight times speed.

In addition, in the case of Figs. 4 and 5, it is also possible to standardize the serial number which means the fifth byte in the disc information in the same manner as described above. For example, if the serial number is " 0h " The disc information related to 1x speed of the first recording layer L0. In this case, recording the recording layer information and the speed information in the seventh byte as described above will be information for confirming this. In some cases, the recording layer information and the speed information are written in the fifth byte without recording the seventh byte. It will also be possible to record.

According to the first embodiment, in order to search for the disc information related to the specific recording layer and specific speed desired by the recording / playback apparatus (Fig. 13), all the disc information in the PIC area is checked first, and each disc information is obtained. The unique recording layer information and the speed information recorded as shown in FIG. 4 will be read, and thus the desired disc information will be found among the read disc information.

Unlike the first embodiment, the second embodiment of the present invention, unlike the first embodiment, is a pointer that designates which position in the disk information corresponds to the specific recording layer and the specific speed corresponding to the same information in the disk information. In the second embodiment, when only one piece of disc information is reproduced, the position of the desired disc information can be searched more easily by using common pointer information recorded therein. You can do it.

A second embodiment of recording disk information to which the present invention is applied will be described in detail with reference to Figs. 6 to 9 as follows.

First, Fig. 6 relates to a second embodiment of recording disc information to which the present invention is applied, and shows a conceptual method in which the "pointer information" is recorded.

First, the order is set as the serial number for each disk information, and this is recorded as 1 byte. For example, this information is recorded in the fifth byte of the disk information, and this information is referred to as "DI frame sequence number in DI block", and is briefly expressed as "00h, 01h, 02h ---". That is, if the information of the 5th byte is "00h", it means the first disk information, and if it is "15h", it means that it is the 16th disk information. Next, "pointer information", which means the positional information of specific disk information, which is the main problem in the present invention, is recorded in (N, N + 1th byte) and information specifying the position of the first disk information at each speed. Separate area by dividing it into offset pointer for each speed, and information (Layer 0,1,2,3 pointer recorded in M, M + 1 byte) that designates the position of disk information related to the recording layer to which each speed is applied. And the position of the disc information is determined by the combination thereof.

The information designating the position of the first disc information for each speed is recorded as the 5th byte information of the disc information in the serial order form of the disc information in the same representation as the information indicating the sequence of the disc information. 00h "," 03h ", etc.), and information specifying the position of the disc information related to the recording layer to which the respective double speeds are applied is specified as the number added in the first positional information for the corresponding double speed.

In addition, in the embodiment of Fig. 4, the allowable speeds are indicated as 1x speed (1X), 2x speed (2X), 3rd speed (3rd X), and 4th speed (4th X). The double speed (3rd X) can be designated as 4 times speed, and the 4th double speed (4th X) can be specified as 6 times speed. In addition, it is preferable to record the N, N + 1th byte where double speed information is recorded in the 14th, 15th byte in order to maintain compatibility between the same series disks, and the M, M + 1th byte, which is information per recording layer, is the same reason. It is preferable to write to the 18th and 19th bytes.

Referring to the second embodiment of Fig. 6 in more detail, first, by dividing a specific byte (N, N + 1) in the disk information by 4 bits, the position of the first disc information per allowable speed is indicated for each 4 bits. Make a note. The position of the first disc information per allowable speed is the same as the information about the serial order of the disc information recorded in the fifth byte. In addition, since two bytes of N and N + 1 are allocated, up to four double speeds can be expressed. If you have more than 5 different speeds, you can add the number of bytes as N, N + 1, N + 2 ---. (Another way of expanding bytes is also described in detail in FIG. 9).

In addition, the position information of the recording layer to which each double speed is applied is recorded in the other bytes (M, M + 1) in the disc information, which is to designate the number added in the first disc information for each double speed. This makes it possible to express both the position of the first disc information at each speed and the position of the recording layer to be applied at the same speed, making it possible to express the positions of 16 disc information as a total of 4 bytes.

Such information is referred to as "pointer information" in the present invention. That is, the "pointer information" is recorded in common in all the disc information, and the recording / reproducing apparatus (Fig. 13) is the position of the disc information for the specific recording layer and specific speed desired even if only one disc information is read out. There is an advantage that can easily search.

In addition, the "pointer information" can express the position of 16 disc information in total as 4 bytes, and there is an additional advantage that all the disc information can be represented within a limited size of disc information. will be.

FIG. 7 shows that in the second embodiment of FIG. 6, there are four different recording layers to which four double speeds and four double speeds are applied, so that there are a total of 16 disc information, and the position information of these disc information is " pointer " This is an example of how to express "information".

For convenience of explanation, the 3rd speed is 4 times and the 4th speed is 6 times. In the N, N + 1th bytes in all the disc information, the position of the first disc information for each predetermined speed is pre-assigned by 4 bits. Therefore, "0000b", the upper 4 bits of the Nth byte, means to specify the position of the first disk information at 1x speed, which becomes the disk information corresponding to "00h" as the serial number, and the lower 4th of the Nth byte. The bit "0100b" designates the position of the first disk information at double speed, which is the serial information of the disk information corresponding to "04h", and the upper four bits of the N + 1 byte are "1000b". It means to designate the position of the first disk information about 4x speed, which is the disk information corresponding to "08h" as the serial number, and "1100b", the lower 4 bits of N + 1th byte, is the first disk about 6x speed. It is meant to specify the location of the information, which is the disk information corresponding to "12h" as the serial number.

In addition, in the M, M + 1 th byte, information specifying the position of the recording layer to which each double speed is applied is recorded. In this example, a total of four recording layers (Layer 0, 1, 2, 3) are supported. The upper four bits of "0000b" designate the position of the first recording layer L0 at double speed, and the lower four bits "0001b" of the Mth byte designate the position of the second recording layer L1 at double speed. , "0010b", which is the upper 4 bits of the M + 1 byte, designates the third recording layer L2 position at double speed, and "0011b", which is the lower 4 bits of the M + 1th byte, is assigned to the fourth recording layer by double speed. (L3) location is specified. In the above description, the recording layer information means the number added from the first position information for each speed. For example, if the recording layer position information is "0000b" (L0), the number added is "0". If the number is " 0010b " (L2), the added number is " 2 ", which means the next second disk information in the first disk information for each corresponding speed.

Therefore, if the recording and reproducing apparatus (Fig. 13) wants to confirm the 4x speed disc information of the third recording layer, the position of the first disc information at 4x speed is first identified from the upper 4 bits of the N + 1th byte ( "08h"), and then the position of the recording layer for the corresponding double speed is confirmed from the M + 1th upper 4 bits, which is the next third disc information at the first disc information position ("08h") of the 4th speed. Finally, the position of the disc information to be found becomes the disc information with the serial number "11h".

  8 shows a method of expressing two pieces of recording information and four different speed information for each recording layer so that there is a total of eight pieces of disc information and the positional information of these pieces of information is shown in FIG. This is an example. The detailed expression method is the same as in the case of FIG. 7, and is omitted. However, in the present embodiment, when there are only two recording layers, the M + 1 byte having information on the third recording layer and the fourth recording layer is required. Since there is no information, these areas are set to "1111b", and when the information of "1111b" is detected, the system recognizes that the corresponding recording layer does not exist.

Fig. 9 shows an enlarged case of the second embodiment for recording the disc information of the optical disc according to the present invention, which is applicable to the case where the double speed or the recording layer is expanded / added in the second embodiment (Fig. 6). That's the way.

That is, the second embodiment of Fig. 6 uses a method of designating a position of up to four recording layers and a disc information designating up to four different double speeds for each recording layer using four bytes, or at least one of the number of recording layers and the double speed. If one is more than five, it cannot be represented, and in this example, an additional byte is allocated in the disk information to solve this problem. For convenience of explanation, the initial 4 bytes (N, N + 1, M, M + 1) are designated as the first group field, and the additional 4 bytes (X, X + 1, Y, Y + 1) are deleted. It is called 2 group field.

The recording method of the added second group field is " pointer information " which is the same as the recording method of the first group field, including information specifying the position of the first disc information for each double speed to be added and (X, X + 1st byte). Offset pointer for each 5th to 8th speed recorded on the disk, and information that specifies the position of the disk information related to the additional recording layer to which each speed is applied (Layer 4, 5, 6, 7 recorded in the Y, Y + 1 th byte pointer) in a separate area and is determined by a combination thereof.

Also, in this embodiment, for compatibility between discs of the same series, it is preferable to record the N, N + 1th bytes in which the information for each speed is recorded as the first group field in the 14th and 15th bytes. It is preferable to record the M + 1th byte in the 18th and 19th bytes, and the X, X + 1th byte in which the information for each speed is recorded as the second group field is preferably recorded in the 20th, 21st byte. In this case, it is preferable to record the Y, Y + 1 th byte in which the recording layer-specific information is recorded in the 22, 23 th byte.

Therefore, in the case of the example of Fig. 9, it is possible to record the positional information of 32 pieces of disc information existing in the disc as "pointer information" by using a total of 8 bytes.

Fig. 10 relates to a third embodiment for recording disc information to which the present invention is applied, and relates to a method of expressing position information of disc information by integrating the first and second embodiments.

That is, the disc information is very important information including the disc speed information and the recording related information (WS) corresponding to the disc speed, and requires high reliability. Both the first and second embodiments will be described. By recording the disc information, it is easy to cope with the misdetection of the disc information in the future, and the recording and reproducing apparatus (Fig. 13) is recorded since both the methods according to the first and second embodiments are recorded. It is also possible to apply only certain embodiments in the design, which has the additional effect of having flexibility in implementation.

In Fig. 10, in the seventh byte in the disc information, " recording layer information " and " double speed information " unique to the disc information are recorded in the same manner as in the first embodiment (Fig. 4), and N to N + 1, M to M; In the +1, X to X + 1, and Y to Y + 1th bytes, "pointer information" is recorded as in the second embodiment (Fig. 9), but N to N + 1 and X to X + 1. In the first byte, the position of the first disc information for the corresponding speed is recorded, and in the M ~ M + 1, Y ~ Y + 1, the allowable recording layer information is recorded in the first byte, which is added at the position of the first disc information for the corresponding speed. The offset will be recorded.

FIG. 11 shows an example in which the disc information is recorded by applying the third embodiment of FIG. 10, in which there are a total of 32 disc information related to eight recording speeds and four recording layers. Fig. 11 specifically shows the serial number " 04h " which is the fifth of 32 disc informations.

In the disc information (serial number "04h"), as in the case of all disc information, the common "pointer information" is N to N + 1, M to M + 1, X to X + 1, and Y to Y. It is recorded in the +1 th byte. In particular, in this example, since there are four recording layers, the Y to Y + 1 th bytes for indicating the additional recording layer are not used, so all of them are set to "1111b".

In the seventh byte in the disc information (serial number " 04h "), recording layer information and double speed information, which mean the disc information, are recorded as the unique information of the disc information. That is, since the "04h" disc information is double-speed related disc information of the first recording layer, the upper four bits of the seventh byte indicate "0000b", and the lower four bits indicate "0001b". The information indicating the 2x speed is recorded directly.

Therefore, when the recording / reproducing apparatus (Fig. 13) wants to search " first recording layer double speed disc information ", for example, first the Nth point from " pointer information " to " double speed " Reads the lower 4 bits "0100 (04h)", and also reads "0000 (L0)" from the Mth upper 4 bits, which means "first recording layer," and converts it to the above speed information ("0100 (04h)"). In the end, it can be seen that the position of the final disc information related to " first recording layer double speed " is " 04h ". In addition, the recording and reproducing apparatus (FIG. 13) once again confirms that the disc information is the disc information related to the " double-speed first recording layer " from the seventh byte in the " 04h " disc information obtained from the " pointer information ". (Verification) It becomes possible.

FIG. 12 shows another example of recording disc information by applying the third embodiment of FIG. 10. In the case where there are a total of 32 disc information related to four recording speeds and four recording layers in the disc, In particular, the serial number " 31h " which is the last of the 32 disc information is shown.

In the 32nd disc information ("31h"), the same "pointer information" is recorded as the other disc information, and in the 7th byte, recording layer information unique to the "31h" disc information (meaning the third recording layer) "0011" and double speed information ("1111" meaning 16 times speed) are recorded.

 Therefore, in the case where the recording / playback apparatus (Fig. 13) wants to search "the third recording layer 16x speed disc information", for example, the corresponding disc information from "pointer information" is "31h". From the seventh byte in the " 31h " disc information, it is confirmed (verified) that the disc information is the " third recording layer 16x speed " related disc information, so that accurate disc information can be detected.

Fig. 13 relates to a recording / playback apparatus on an optical disk to which the present invention is applied, and the recording / playback apparatus is composed of a recording / playback section 10 for performing recording and playback on an optical disk and a control section 20 for controlling it. The control unit issues a recording or reproducing command to the specific area to the recording and reproducing unit, and the recording and reproducing unit performs recording and reproducing to the specific area according to the command of the control unit. Specifically, the recording and playback section 10 includes an interface section 12 for communicating with the outside, a pickup section 11 for directly recording or reproducing data on an optical disc, and a playback signal received from the pickup section. A data-processor 13 for restoring a signal value or modulating a signal to be recorded into a signal recorded on an optical disk, and transferring the data-processor 13 to pick up a signal accurately from the optical disk or to accurately record a signal on the optical disk. A servo unit 14 for controlling the unit 11, a memory 15 for temporarily storing various information and data including management information, and a microcomputer 16 for controlling the components of the recording / reproducing unit. have.

The search process and recording process of the disc information of the optical disc according to the present invention will be described in detail. First, when the optical disc is loaded into the recording / playback apparatus, all management information on the disk is read out and temporarily stored in the memory 15 of the recording / playback section. These management information are stored and utilized in recording and reproducing on the optical disc. In particular, the management information stored in the memory also includes the disc information of the present invention, so that the common "pointer information" recorded in the disc information, recording layer information and speed information unique to each disc information, and suitable for the corresponding speed. The record related information WS is also read and temporarily stored in the memory.

The microcomputer 16 can first confirm the position of the disc information related to the specific speed of the specific recording layer for which a search is desired from the "pointer information", and also the unique "recorded in the identified disc information." After the final check (verification) clause confirms whether the disc information matches the desired disc information from " recording layer information " and " speed information ", if the discrepancy is matched, the record information (WS) recorded in the P to 111 th byte in the disc information is used. Recording is performed by applying the record related information (WS) appropriate for the speed.                     

 In other words, if there is a plurality of disc information in the disc, the microcomputer 16 can reduce the time load required to reproduce all the disc information every time the search is performed, as well as verify the finally confirmed disc information. It will be possible to manage the high disk information.

As mentioned above, preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

The present invention provides a variety of methods for recording disc information corresponding to high speed in a high density optical disc, and position information for easily identifying the disc information such as "pointer information", "recording layer information", and "speed information". The present invention provides a method of recording, which makes it possible to easily use standardized disc information and to efficiently cope with recording and reproducing optical discs.

Claims (26)

A recording medium comprising at least two recording layers, And a specific area for recording disk information including a plurality of disk information units arranged in a sequential order, including recording related information of data, Each of the disc information units is provided for each recording layer and recording speed, and each of the disc information units includes recording layer related information of a predetermined recording layer in which the disc information unit is used and a predetermined recording speed allowable for the predetermined recording layer. It includes WS (Write Strategy) information used for, the plurality of disc information units are arranged in the order of increasing the recording speed and arranged in the order of increasing the number of the recording layer within the same recording speed. Recording medium. The method of claim 1, Wherein each of the disc information units further comprises serial number information of an arrangement order of the corresponding disc information units arranged in the sequential order. The method according to claim 1 or 2, And the WS information includes a WS parameter corresponding to a recording power value and a pulse timing value used for the recording speed allowable in the recording layer while recording the data. The method according to claim 1 or 2, And the specific area is information pre-recorded in a sub area of a lead-in area provided in the predetermined recording layer. delete The method of claim 4, wherein And the previously recorded information is copied to a recordable area of the recording medium. delete The method according to claim 1 or 2, The WS information further includes WS type information indicating one of n / 2 type and n-1 type, where n is a length of a recording mark, and each WS type is a recording pulse for forming the recording mark. Number, The n-1 type has a different WS parameter from the n / 2 type. delete The method of claim 8, And the recording medium is a recordable Blu-ray disc comprising at least two recording layers. The method according to claim 1 or 2, The recording medium includes a L0 recording layer and an L1 recording layer, And the plurality of disc information units are arranged in an increasing order of the recording speed, and within the same recording speed, the L0 recording layer is arranged and then the L1 recording layer is arranged. A recording apparatus for recording data on a recording medium having at least two recording layers, Pickup for performing data recording / reproducing; Receiving a recording command for recording data in a specific recording layer at a specific recording speed, and specifying the recording command in the recordable area of the recording medium based on the disc information including a plurality of disc information units provided for each recording layer and recording speed. A control section for controlling the pickup to record the data on the specific recording layer at a recording speed; The plurality of disk information units each include recording layer related information of a predetermined recording layer in which the corresponding disk information unit is used and WS information used at a predetermined recording speed allowable for the predetermined recording layer. And the recording speed is arranged in increasing order, and the recording speed is recorded in a sequential order of increasing number of the recording layer within the same recording speed. The method of claim 12, And each of said disc information units further comprises serial number information on an arrangement order of said disc information units arranged in said sequential order. The method according to claim 12 or 13, The control unit controls the pickup to read the disc information from a sub area of the lead-in area of the recording medium, The WS information includes a WS parameter corresponding to a recording power value and a pulse timing value used for an acceptable recording speed in the recording layer, And the pickup reads the disc information including the WS parameter. A recording apparatus for recording data on a recording medium comprising at least two recording layers, Pickup for performing data recording / reproducing of the recording apparatus; A servo unit for controlling the servo operation of the pickup in accordance with a recording speed; A memory for storing disk information including a plurality of disk information units arranged in a sequential order; A control unit for identifying the disc information stored in the memory and controlling the pickup to record the data on the recording medium using WS information included in the disc information identified; Each of the disc information units is provided for each recording layer and recording speed, and each of the disc information units includes recording layer related information of a predetermined recording layer in which the disc information unit is used and a predetermined recording speed allowable for the predetermined recording layer. And a plurality of the disc information units arranged in the order of increasing the recording speed and in the order of increasing the number of the recording layer within the same recording speed. . The method of claim 15, And each of said disc information units further comprises serial number information on an arrangement order of said disc information units arranged in said sequential order. The method according to claim 15 or 16, The memory stores the disc information read by the pickup, The WS information includes a WS parameter corresponding to a recording power value and a pulse timing value used for an acceptable recording speed in the recording layer, And the control unit controls the pickup to record the data using the WS parameter included in the WS information. The method of claim 17, The controller further checks a WS type based on WS type information indicating one of n / 2 type and n-1 type, reads the WS parameter corresponding to the WS type, and uses the read WS parameter. Control the pickup to record the data, Here, n is the length of the recording mark, wherein each of the WS type represents the number of recording pulses for forming the recording mark, wherein the n / 2 type and the n-1 type have different WS parameters. Characterized in that the recording device. A recording method for recording data on a recording medium comprising at least two recording layers, Receiving a recording command to record data in a specific recording layer at a specific recording speed; A plurality of disc information units each provided for each recording layer and a recording speed, each having a recording layer related information of a predetermined recording layer in which the disc information unit is used, and WS information used for a predetermined recording speed allowable in the predetermined recording layer; Recording the data in a recordable area of the recording medium based on the disc information including; And the plurality of disc information units are arranged in an increasing order of the recording speed, and are recorded in a sequential order of increasing number of the recording layer within the same recording speed. The method of claim 19, And the reading of the disc information comprises reading the disc information which is previously recorded information from a sub area of the lead-in area of the recording medium. The method of claim 19 or 20, Wherein each of said disc information units further comprises serial number information on an arrangement order of said disc information units arranged in said sequential order. A recording method for recording disc information on a recording medium having at least two recording layers, Reading the disc information having a plurality of disc information units having WS information used at a predetermined recording speed allowable for a given recording layer from a particular region of a particular recording layer of the recording medium; Recording data on the recording medium using the WS information included in the disc information; Each of the disc information units is provided for each recording layer and recording speed, and the disc information unit further includes recording layer related information of the predetermined recording layer in which the disc information unit is used, and the plurality of disc information units And the recording speed is arranged in increasing order, and within the same recording speed, the recording layer numbers are arranged in increasing order. 23. The method of claim 22, And reading the disc information comprises reading the disc information from a sub area of the lead-in area of the recording medium. 24. The method of claim 23, The method further includes reading WS type information included in the disk information and indicating one of n / 2 type and n-1 type. Wherein n is the length of the recording mark and each WS type represents the number of recording pulses for forming the recording mark, wherein the n / 2 type and the n-1 type have different WS parameters. Way. 24. The method of claim 23, The recording of the data may include writing data to a user data area of the recording medium by using a WS parameter corresponding to a recording power value and a pulse timing value included in the WS information and used for an acceptable recording speed in the recording layer. A recording method, characterized by recording. delete

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