WO2005124745A1 - 情報記録媒体、マスタリング装置、識別情報記録装置、識別情報再生装置、マスタリング方法、識別情報記録方法、及び識別情報再生方法 - Google Patents
情報記録媒体、マスタリング装置、識別情報記録装置、識別情報再生装置、マスタリング方法、識別情報記録方法、及び識別情報再生方法 Download PDFInfo
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- WO2005124745A1 WO2005124745A1 PCT/JP2005/011144 JP2005011144W WO2005124745A1 WO 2005124745 A1 WO2005124745 A1 WO 2005124745A1 JP 2005011144 W JP2005011144 W JP 2005011144W WO 2005124745 A1 WO2005124745 A1 WO 2005124745A1
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- information recording
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
- G11B20/00579—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the data encoding, e.g., modulation schemes violating run-length constraints, causing excessive DC content, or involving uncommon codewords or sync patterns
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- G—PHYSICS
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
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- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
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- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1221—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc cluster, i.e. a data structure which consists of a fixed number of sectors or ECC blocks
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- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1238—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located
- G11B2020/1239—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located the track being a pregroove, e.g. the wobbled track of a recordable optical disc
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- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1267—Address data
- G11B2020/1274—Address data stored in pre-pits, i.e. in embossed pits, ROM marks or prepits
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- G11B2020/1287—Synchronisation pattern, e.g. VCO fields
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- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
- G11B2020/1453—17PP modulation, i.e. the parity preserving RLL(1,7) code with rate 2/3 used on Blu-Ray discs
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- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
- G11B2020/1457—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof wherein DC control is performed by calculating a digital sum value [DSV]
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
Definitions
- Information recording medium mastering device, identification information recording device, identification information reproducing device, mastering method, identification information recording method, and identification information reproducing method
- the present invention relates to an information recording medium on which identification information is recorded, a mastering device and method for creating the information recording medium, an information recording device and method for recording information on the information recording medium, and information recording
- the present invention relates to an identification information reproducing apparatus and method for reproducing identification information from a medium.
- BD read-only disc of a Blu-ray disc
- the ROM format of this BD is hierarchized, and is divided into a physical cluster section and a linking section at the highest level.
- the physical cluster unit is composed of 16 address units, and each address unit is composed of 31 data frames.
- Each data frame is composed of an area for recording user data called an ECC cluster, and an area for recording address data or user control data called a BIS cluster.
- the area for recording address data is included in the first three data frames in each address unit, and in the BIS cluster in the remaining data frames, it is an area for user control data. .
- Each data frame is divided into 45-bit blocks, each of which is a block of 20 bits at the head, for a total of 28 blocks.
- Each block has a DC control bit at the end. In this bit, the bit value is controlled such that the absolute value of the DSV associated with the appearance ratio of the modulated bit approaches 0.
- the bit string obtained in this manner is applied to a frame synchronization signal prepared according to a frame number or the like, and then subjected to a 1-7 pp modulation bit while being modulated based on a 1-7 modulation table. Is converted to a sequence of bits.
- the bit string modulated using the 1-7 modulation table is an NRZI bit string that reverses the sign of the pulse with 0 or 1. Therefore, in practice, a signal obtained by converting NRZI signal power NRZI-NRZ so that 0 and 1 correspond to pits or lands in a 1: 1 correspondence is recorded on a medium.
- the linking unit records two frames of data having the same frame configuration as the physical cluster unit, starting with a frame synchronization signal that does not exist in the physical cluster unit.
- the present invention has been made in view of the above-described problems, and has as its object to facilitate creation in a form in which a land always appears in an area where identification information is recorded.
- An object of the present invention is to provide an information recording medium capable of reliably recording, and a mastering device, an identification information recording device, an identification information reproducing device, and a method for creating the information recording medium.
- an information recording medium of the present invention has a recording area in which a bit string generated according to a predetermined modulation method is recorded, and a recording area includes a land and a pit. And the presence or absence of pits formed by laser irradiation on the lands of this pair. And an identification information area in which predetermined identification information is recorded.
- the mastering device of the present invention rotates a master for forming a land and pit pattern on the stamper when forming a stamper for transferring a bit string represented by a land and pit pattern on an information recording medium.
- predetermined identification information is recorded as the presence or absence of a pit formed by irradiating the land with laser after the information recording medium is manufactured in a pair of lands and pits. A pair of land and pit is formed.
- a master for forming a land and a pit pattern in the stann is rotated to form a stanno for transferring a bit U which also has a pattern power of a land and a pit on an information recording medium. Then, a bit sequence to be recorded on the master is generated, and the generated bit sequence is recorded on the rotationally driven master.
- the bit sequence is stored in a predetermined area of the information recording medium according to a predetermined modulation method.
- a land and pit pair in which predetermined identification information is recorded as the presence or absence of a pit formed by laser irradiation on the land after the information recording medium is manufactured.
- an information recording apparatus of the present invention is an information recording apparatus which records identification information by changing a bit sequence formed on an information recording medium based on a predetermined modulation method, Recording medium power
- An area detecting section for detecting a predetermined area in which a land and pit pair is recorded, and a laser that is switched to the predetermined area in accordance with the bit value of the identification information to irradiate the predetermined area with the laser.
- a recording control unit for changing the land in the pair into pits and additionally writing identification information.
- the information recording method of the present invention is an information recording method for recording identification information by changing a bit string formed on an information recording medium based on a predetermined modulation method, wherein the information recording medium has a land and a pit. A predetermined area in which the pair is recorded is detected, and the predetermined area is irradiated with a laser that is switched according to the bit value of the identification information, so that the land in the pair is changed into a pit and identified. Add information.
- the information reproducing apparatus of the present invention is an information reproducing apparatus that reproduces identification information of the information recording medium recorded by changing a bit string formed on the information recording medium. It has an area detecting section for detecting a predetermined area in which a pair of a land and a pit is recorded, and an identification information detecting section for detecting a bit value of the identification information from a bit string reproduced from the predetermined area.
- an information reproducing method of the present invention is an information reproducing method for reproducing identification information of an information recording medium recorded by changing a bit string formed on the information recording medium, wherein the information recording medium has a land and a pit. A predetermined area in which the pair is recorded is detected, and the bit value of the identification information is detected from the reproduced bit string.
- FIG. 1 is an explanatory diagram showing a signal format of an information recording medium to which the present invention is applied.
- FIG. 2 is an explanatory diagram showing a configuration of a physical cluster portion of an information recording medium to which the present invention has been applied.
- FIG. 3 is an explanatory diagram showing a configuration of a data frame of an information recording medium to which the present invention has been applied.
- FIG. 4 is an explanatory diagram showing data blocks of an information recording medium to which the present invention has been applied.
- FIG. 5 is an explanatory diagram showing a parity storage method of an information recording medium to which the present invention is applied.
- FIG. 6 is an explanatory diagram showing a recording area of identification information of an information recording medium to which the present invention has been applied.
- FIG. 7 is an explanatory diagram showing a 1-7 modulation table.
- FIG. 8 is an explanatory diagram showing a frame synchronization pattern at the head of a data frame.
- FIG. 9 is an explanatory diagram showing an NRZI bit pattern in an area for recording identification information of an information recording medium to which the present invention has been applied.
- FIG. 10 is a diagram showing an area in an information recording medium for recording identification information to which the present invention is applied.
- FIG. 5 is an explanatory diagram showing an NRZ bit pattern.
- FIG. 11 is an explanatory diagram showing a process for manufacturing an information recording medium to which the present invention is applied.
- FIG. 12 is a block diagram showing an example of a recording device and a recording method for recording identification information.
- FIG. 13 is a block diagram showing a writer portion of a recording device and a recording method for recording identification information.
- FIG. 14 is an explanatory diagram showing a correspondence table between identification information and bit strings in an area where identification information is recorded.
- FIG. 15 is a block diagram showing an example of a reproducing apparatus and a reproducing method for reproducing identification information.
- FIG. 16 is a block diagram showing another example of another reproducing apparatus and a reproducing method for reproducing identification information.
- FIG. 17 is an explanatory diagram showing a correspondence table between identification information and a demodulated bit string in an area where identification information is recorded.
- the information recording medium is a medium in which a bit string generated according to, for example, the 17 modulation method is recorded, and its identification information is recorded in, for example, a frame sync. Of the pair of lands and pits formed in a predetermined area in the control block), this is recorded as the presence or absence of pits formed by laser irradiation on the lands.
- the land and pit pair is obtained by performing a 17-bit modulation or the like on a predetermined bit string.
- the predetermined bit string is as follows.
- the predetermined bit sequence is a bit sequence that is converted into a bit sequence including at least two lands and two pits by performing 1-7 modulation or the like.
- the predetermined bit string is defined as the run length of four lands and pits obtained by performing 1-7 modulation or the like, which is the minimum run length or the minimum run length + 1 run length in the 1-7 modulation method. It is a bit string that gives The bit length is such that the run length of the two inner lands and pits is the minimum run length in the 1-7 modulation method. Then, in this case, the predetermined bit string is composed of four lands and a pit length force channel (2, 2, 2, 2), (2, 2, 2, 3), (3, 2, 2) , 2), (3, 2, 2, 3).
- the predetermined bit string is such that the inner two lands and pits of the four lands and pits are always at the same position.
- the predetermined bit string is a bit string capable of generating the above-described combination of land and pit, regardless of the preceding and following bit strings.
- the predetermined bit string is a bit string of 10 bits and includes any one of (0110011110), (101001110), (0101011110), (1001011110), (0101110101), and (1001110101). .
- the present embodiment relates to a mastering apparatus and a method for forming a stamper for transferring a bit string represented by a land and pit pattern on an information recording medium, and a method for forming the stamper according to 17 modulation or the like.
- a land and pit pair is formed in a predetermined area in the DC control block.
- the present embodiment relates to an information recording apparatus and method for recording identification information of an information recording medium by changing a bit string obtained by 1-7 modulation or the like, so that a predetermined area in a DC control block is provided.
- a land and pit pair is recorded from the information recording medium in which the land and pit pair is formed, a predetermined area is detected, and a laser switched to this area according to the bit value of the identification information is detected.
- the land is pitted and the identification information is additionally recorded.
- the present embodiment is directed to an information reproducing apparatus for reproducing the identification information of an information recording medium by changing a bit string obtained by 17 modulation or the like. According to the method and the method, the identification information is recorded, the information recording medium strength is determined. A predetermined land and pit pair is recorded, the area is detected, and the bit string power reproduced in this area is also the bit value of the identification information.
- FIG. 1 is an explanatory diagram showing a part of the format of an information recording medium according to an embodiment of the present invention, and shows the configuration of a physical cluster unit and a linking unit.
- the format of the information recording medium used in the present embodiment is divided into a physical cluster section 10 and a linking section 20 in the uppermost layer, and a predetermined one or a plurality of physical cluster sections 10 are formed. It is to be used as a dedicated cluster for recording identification information.
- FIG. 2 is an explanatory diagram showing the configuration of the physical cluster unit.
- each address unit 21 is composed of 31 data frames 22.
- FIG. 3 is an explanatory diagram showing the configuration of a data frame.
- Each data frame 22 includes a user data area 211 called an ECC cluster, and an address data or user control data area 212 called a BIS cluster.
- the address data area of the BIS cluster is included in the first three data frames in each address unit, and the BIS clusters in the remaining data frames are usually user control data areas. You. In the part where the identification information is recorded in this embodiment, it is sufficient if the user control data is not necessary and the address is known. Therefore, in this embodiment, in each unit of the physical cluster, a data frame of 28 columns that does not include address data is used as a dedicated frame for recording identification information.
- FIG. 4 is an explanatory diagram showing how a data frame is divided into blocks.
- one data frame 22 divides the first 20 bits of data into one block 221, and the subsequent data into 45-bit blocks 222, 223,.
- FIG. 5 is an explanatory diagram showing a frame synchronization signal and DC control bits added to each divided block.
- a frame synchronization signal 249 is added to the head of a data frame, and one DC control bit 250 is added to the end of each block.
- This In bit 250 the bit value is controlled such that the absolute value of the DSV associated with the appearance ratio of the modulated bit approaches zero. Further, information cannot be recorded in the portion of the frame synchronization signal 249.
- bit string for recording the identification information is 10 bits (! / ⁇ before modulation)
- a bit string of this length can be stored in each DC control block. Therefore, in this embodiment, the head of the block excluding the block for recording the frame synchronization signal is used as an area for recording 10-bit identification information.
- FIG. 6 is an explanatory diagram showing a frame configuration when an area for recording identification information (UID) 260 is provided at the beginning of each block. Thus, an area for recording identification information in the present embodiment is prepared.
- UID area for recording identification information
- the bit string obtained as described above is a 17 PP modulated bit string while being modulated based on the 1-7 modulation table, following a frame synchronization signal prepared according to a frame number or the like.
- Is converted to FIG. 7 shows a modulation table of 1-7 modulation.
- XX in FIG. 7 means that X takes any value of 0 or 1.
- fs represents a frame sync.
- FIG. 8 shows a frame synchronization signal.
- # in FIG. 8 becomes 1 only when the bit sequence before modulation before this frame sync becomes 0 or 0000, and becomes 0 otherwise.
- FIG. 9 is an explanatory diagram showing bit strings arranged in an area for recording identification information in the present embodiment.
- bit strings are prepared and set as UIDO, 1, 2, and 3 in order.
- the first three bits are XXX depending on the pattern before and after, and the remaining 12 bits are 3T—2T—2T—3 ⁇ and 2 ⁇ —2 ⁇ —2 ⁇ —3 ⁇ . It can be seen that it is converted to a bit string containing
- bit string on which identification information can be recorded is prepared. Furthermore, the inner 2 ⁇ -2 ⁇ position of this bit string is always the 8th bit from the beginning. Therefore, it can be seen that the head power of the block, the 8th bit power, and the 11th bit are the areas where the identification information is recorded.
- bit strings in which identification information can be recorded are given. These are used for the above-mentioned area by randomly selecting any one of them in order to enhance confidentiality. be able to. If confidentiality is not required, only one of these medium powers may be used. When the position where the identification information is recorded is made variable, more bit strings are conceivable.
- FIG. 10 is a diagram in which a bit string for recording identification information written in NRZ is represented as a bit string for recording identification information written in NRZI.
- XXX written in the modulation bit string (NRZ) table is a part that depends on the pattern of bits before modulation, and is 0 or irrespective of the area for recording identification information in this embodiment. It becomes an arbitrary predetermined bit string of 1.
- XXX written on the table of the bit string on the right is a bit string determined according to XXX of NRZ. As shown in the figure, it can be seen that a 2T-2T land and pit combination appears at a predetermined position in the bit string.
- FIG. 11 is a block diagram showing a manufacturing process of the information recording medium in the present embodiment.
- the method of manufacturing an information recording medium in the present embodiment is such that a resist coating step 301, a cutting (formatter) step 302, a developing and fixing step 303, and a metal master (mold) forming step 304 are performed on a glass master 300. After that, a metal master is created.
- the resist coating step 301 is a step of applying a photoresist to the glass master disk 300
- the cutting step 302 is to irradiate the photoresist with a laser that is switched in accordance with a bit string to record an uneven pattern. It is a process.
- the bit string includes information (user information) 311 that the user wants to record and a cluster 312 for identification information, which is a feature of the present embodiment.
- the developing and fixing step 303 is a step of developing the resist on which the pattern of the concavo-convex pattern is recorded on the master and fixing the resist on the master
- the metal master forming step 304 is to apply electrolytic plating to the surface of the master. Apply metal master (die) This is the process of creating.
- a disk substrate is formed through a stamper forming step 305 and a substrate forming step 306 based on the prepared metal master.
- the stamper making step 305 is a step of manufacturing a stamper based on a metal master
- the substrate forming step 306 is a step of arranging the stamper in a molding die and using an injection molding machine to form a polycarbonate. This is a process of forming a disk substrate with a transparent resin such as acrylic or acrylic. The land and pit patterns formed on the master in the cutting process are transferred to the disk substrate thus manufactured.
- a reflective film is formed on the surface of the disk substrate on which the pit pattern has been formed by sputtering or the like.
- the information recording medium in the present embodiment records identification information on this reflective film.
- this reflective film must be a reflective film capable of recording identification information by thermal recording in addition to normal bit information. Therefore, as this reflection film, in addition to aluminum, which has a general composition of a reflection film, a reflection film made of an alloy by mixing another element is used.
- a protective film is formed by a protective film application step 308. This step is performed by applying an ultraviolet curable resin onto the reflective film by spin coating, and irradiating ultraviolet rays. It should be noted that the information recording medium thus formed can be reproduced with information by irradiating a laser beam for reading from the protective film side.
- the mastering method and the mastering device in the present embodiment relate to the cutting step in FIG.
- the laser light irradiated on the photoresistor is switched according to the recorded bit sequence.
- the device serving as the source of the switching information is a modulated bit string output from an external storage device usually arranged in a PC or the like.
- the above-mentioned external storage device stores an external storage device storing a bit sequence representing normal user information 311 and a bit sequence for recording identification information 312.
- the external storage device is composed of another external storage device and a switching device for switching the external storage device.
- this switching device is usually set so that a laser switching device and an external storage device storing user information are connected.
- a laser switching device is used in a predetermined physical cluster area for recording identification information.
- the external storage device is set to be connected. In this way, a bit string for recording identification information is recorded in a predetermined physical cluster.
- an external storage device storing a bit string in which only a predetermined physical cluster is replaced as a bit string for recording identification information in a bit string representing normal user information
- a laser switching device may be connected.
- it includes the bit string itself stored in the external storage device S, the mastering method and the main part for realizing the mastering device in this embodiment.
- FIG. 12 is a block diagram schematically showing a recording device and a recording method of identification information in the present embodiment.
- the recording apparatus and the recording method of the identification information in the present embodiment include an error correction addition section 402 that inputs the identification information bit string 401 and adds an error correction code, a modulation section 403 that modulates the identification information bit string with the error correction code added, It comprises a formatter 404 that outputs a pulse signal for recording identification information at a predetermined timing, and a writer 405 that emits a laser pulse and actually records the identification information.
- the identification information is 2000-bit information as shown in the figure.
- This information is first added with an error correction bit by an error correction coding circuit.
- an error correction coding circuit As an example of such an error correction coding circuit, a circuit using the algorithm of Reed'Solomon coding is considered. In this way, for example, identification information of 3000 bits having bits for error correction is generated.
- 3000-bit modulation Here, for example, consider modulation in which "0" is converted to "01" and "1" is converted to "10". By doing so, the identification information has 6000 bits.
- a writer 405 for generating a recording pulse signal includes a portion 405B for detecting bit information recorded on the recording medium 406, and a recording portion for recording identification information based on the detected information.
- the 405A is divided into two parts.
- FIG. 13 is a block diagram illustrating a configuration of a writer according to the present embodiment.
- a portion for detecting bit information has the same configuration as a normal reproducing apparatus.
- This part includes a clock generation circuit (not shown) for reproducing a clock from a reproduction signal obtained based on reflection information from the medium 406 by a reading laser (not shown), and a PRML data detection for detecting bit information from the reproduction signal. It comprises a circuit 407, a decoder 408 for decoding the reproduced signal, an ECC 409 for performing error code processing of the reproduced signal, a bypass SW 410 for bypassing the ECC 409, and the like. These configurations may be the same as those of a normal reproducing apparatus.
- the part for recording the identification information is constituted by preparing an additional identification information recording circuit in the reproducing apparatus.
- This section includes a recording area detection section 411 for detecting a special physical cluster section for recording identification information based on the bit string output from the PRML data detection circuit 407, and a pulse signal for switching laser irradiation. It comprises a pulse generator 412 for outputting.
- a special bit string is recorded at the head of the physical cluster portion. If this special bit string is also stored on the recording device side, the recording device can easily detect this position by searching for a bit string to be pattern-matched from the reproduced bit sequence.
- a pulse signal for switching the laser irradiation may be output at a predetermined timing.
- the pulse signal is a signal for switching the laser irradiation according to the bit value of the identification information corresponding to the predetermined irradiation area.
- the first of these signals occurs in the first frame that does not contain address information.
- a signal that switches according to the bit value of the identification information is created so that the laser can be irradiated from the top of the even-numbered block in the cluster from the top to the eighth. That is, a switching signal of the recording laser corresponding to the bit value of the identification information is output with a length of 4 bits every 138 bits from the 77th bit in the frame not including the address information.
- FIG. 14 shows a state in which identification information is recorded in the bit string generated in FIG.
- the recording laser When the bit value (UIDcode) of the identification information is 0, the recording laser is not irradiated, and the bit value remains as shown in FIG. On the other hand, in the case of the bit value of the identification information, the recording laser is illuminated. As a result, the 2T land ('0110,) disappears and becomes (' ⁇ '). In this way, the bit value of the identification information can be recorded according to the presence or absence of the 2nd land.
- FIG. 15 shows an example of a reproducing method and a reproducing apparatus for reproducing the identification information in the present embodiment.
- This reproducing apparatus includes a bit detector (DriveLSI) 510 for detecting bit information recorded on a recording medium 406, and an identification information detector (UID LSI) for detecting detected information card identification information. It is divided into 520.
- DriveLSI bit detector
- UID LSI identification information detector
- the bit detection unit 510 has the same configuration as a normal playback device.
- this part includes a clock generation circuit (not shown) for reproducing a clock from a reproduction signal obtained based on reflection information from a reading laser medium (not shown), a PRML data detection circuit 511 for detecting bit information, A decoder 512 for decoding the reproduced signal, an ECC 513 for performing error code processing of the reproduced signal, a bypass SW 514 for bypassing the ECC 513, and the like.
- the reproduced data is output to the memory 531 of the CPU 530. All of these configurations may be the same as a normal playback device.
- the identification information detecting unit 520 is configured by preparing an additional identification information reproducing circuit in the above-mentioned reproducing apparatus. This part includes, based on the bit string output from the PRML data detection circuit 511, a cluster detection section 521 for detecting a special physical cluster section in which identification information is recorded, and a predetermined area in the detected area. Recorded identity It comprises an identification information detection unit 522 for detecting information.
- a special bit string is recorded in the head portion of the physical cluster portion.
- the head bit string of this cluster can be searched from the reproduced bit string by pattern matching, and this position can be easily detected.
- the state of the land and pit pair at the head (from the 8th bit to the 11th bit from the head) of each block in the frame constituting the cluster may be detected. If this area is still a land and pit pair, the bit value of the identification information is 0, and if this area contains only pits, the bit value of the identification information is 1.
- a table shown in FIG. 14 is used to indicate the correspondence between identification information (UID) bit values and bit strings.
- FIG. 16 shows another example of the reproducing method and the reproducing apparatus for reproducing the identification information in the present embodiment.
- the playback system and the configuration of the playback device are divided into a bit detection unit 540 for detecting bit information recorded on the recording medium and an identification information detection unit 550 for detecting the detected information power as well as the identification information.
- the identification information detection unit 550 is provided in the CPU 560.
- the first bit detection section 540 has the same configuration as a normal reproducing apparatus, and includes a PRML data detection circuit 541, a decoder 542, an ECC 543, and a bypass SW 544 as in the example of FIG.
- the identification information detection unit 550 is realized as software inside the CPU 560 that inputs the detected bit information, and includes a cluster detection unit 551 and an identification information detection unit 522. That is, in the CPU 560, the bit pattern at the head of this cluster is stored as a bit string that does not receive 1-7 modulation, and the bit pattern corresponding to the bit value of the identification information is a bit string that does not receive 1-7 modulation. It is remembered. The CPU 560 first detects the head of the cluster, and then detects a bit string in the area where the identification information is recorded.
- FIG. 17 shows the result of decoding the 1-7 modulation pattern of the identification information in FIG.
- XX in the example where the bit value of the identification information is 1 means that it is the same as the bit string before recording the identification information.
- the bit string pattern in the area where the identification information is recorded is compared with this table, and the bit string pattern is recently selected. Select. The bit value of the identification information corresponding to the selected bit string is recorded in this part, and is set as the bit value of the identification information.
- the recording area of the identification information is changed between the land and the pitch on the information recording medium on which the identification information is recorded by changing some bits of the predetermined block.
- the irradiated recording laser can always pit the land, and can record identification information. The pits remain as pits even when irradiated. For this reason, the configuration of the recording device and the reproducing device of the identification information and their control are simplified, and the recording of the identification information is facilitated.
- the recording area of the identification information has a land and a pit. Therefore, the irradiated recording laser can always pit the land and can record the identification information. The pits remain as pits even when irradiated. For this reason, the configuration for recording the identification information is simplified, and the recording of the identification information is facilitated.
- a pair of lands and pits is formed in a predetermined area of an information recording medium by mastering, so that identification information is recorded in a predetermined area of the information recording medium.
- a predetermined area in which a pair of land and pit is recorded is detected according to the bit value of the identification information.
- the land is pitted and the identification information is additionally recorded, so that the identification information can be recorded on the information recording medium with a simple configuration and control.
- the information recording medium when reproducing the identification information of the information recording medium, the information recording medium detects a predetermined area in which a land and pit pair is recorded, and detects the predetermined area. Area power Regenerated bit string power Detecting the bit value of identification information Thus, the information recording medium power identification information can be reproduced with a simple configuration and control.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Manufacturing & Machinery (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/629,678 US7916606B2 (en) | 2004-06-18 | 2005-06-17 | Information recording medium, mastering device, identification information recording device, identification information reproduction device, mastering method, identification information recording method, and identification information reproduction method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-181116 | 2004-06-18 | ||
| JP2004181116A JP2006004541A (ja) | 2004-06-18 | 2004-06-18 | 情報記録媒体、マスタリング装置、識別情報記録装置、識別情報再生装置、マスタリング方法、識別情報記録方法、及び識別情報再生方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005124745A1 true WO2005124745A1 (ja) | 2005-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/011144 Ceased WO2005124745A1 (ja) | 2004-06-18 | 2005-06-17 | 情報記録媒体、マスタリング装置、識別情報記録装置、識別情報再生装置、マスタリング方法、識別情報記録方法、及び識別情報再生方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7916606B2 (ja) |
| JP (1) | JP2006004541A (ja) |
| TW (1) | TW200614203A (ja) |
| WO (1) | WO2005124745A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006134386A (ja) * | 2004-11-02 | 2006-05-25 | Sony Corp | 光ディスク再生方法及び装置、並びに、光ディスク製造方法 |
| JP2006134385A (ja) * | 2004-11-02 | 2006-05-25 | Sony Corp | 光ディスク製造方法及び装置、光ディスク、並びに、光ディスク再生方法及び装置 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002101733A1 (en) * | 2001-06-08 | 2002-12-19 | Sony Disc Technology Inc. | Optical disk medium, and data recording method and device |
| JP2003141821A (ja) * | 2001-10-31 | 2003-05-16 | Sony Corp | データ記録媒体、データ記録装置及び方法、データ再生装置及び方法 |
| JP2003178453A (ja) * | 2001-12-12 | 2003-06-27 | Sony Corp | データ記録媒体、データ記録方法および装置 |
| JP2003196836A (ja) * | 2001-12-27 | 2003-07-11 | Sony Corp | データ記録媒体、データ記録方法および装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6118752A (en) * | 1995-07-07 | 2000-09-12 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium offset pre-pit array indicating identification information |
| JP3870573B2 (ja) * | 1998-08-24 | 2007-01-17 | ソニー株式会社 | 変調装置および方法、記録媒体、並びに復調装置および方法 |
| JP2002260286A (ja) | 2000-12-28 | 2002-09-13 | Victor Co Of Japan Ltd | 情報記録担体、その再生装置及びその記録装置 |
| JP3848266B2 (ja) * | 2003-01-23 | 2006-11-22 | 株式会社東芝 | ウォブルトラックを持つ光ディスクおよびこの光ディスクを用いる装置と方法 |
| JP2005310270A (ja) | 2004-04-21 | 2005-11-04 | Sony Corp | 固有の識別情報が書き込まれた再生専用の光記録媒体 |
| JP4622291B2 (ja) | 2004-04-21 | 2011-02-02 | ソニー株式会社 | 固有の識別情報が書き込まれた再生専用の光記録媒体 |
-
2004
- 2004-06-18 JP JP2004181116A patent/JP2006004541A/ja active Pending
-
2005
- 2005-06-16 TW TW094120061A patent/TW200614203A/zh not_active IP Right Cessation
- 2005-06-17 WO PCT/JP2005/011144 patent/WO2005124745A1/ja not_active Ceased
- 2005-06-17 US US11/629,678 patent/US7916606B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002101733A1 (en) * | 2001-06-08 | 2002-12-19 | Sony Disc Technology Inc. | Optical disk medium, and data recording method and device |
| JP2003141821A (ja) * | 2001-10-31 | 2003-05-16 | Sony Corp | データ記録媒体、データ記録装置及び方法、データ再生装置及び方法 |
| JP2003178453A (ja) * | 2001-12-12 | 2003-06-27 | Sony Corp | データ記録媒体、データ記録方法および装置 |
| JP2003196836A (ja) * | 2001-12-27 | 2003-07-11 | Sony Corp | データ記録媒体、データ記録方法および装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006004541A (ja) | 2006-01-05 |
| TWI316705B (ja) | 2009-11-01 |
| US20080043595A1 (en) | 2008-02-21 |
| TW200614203A (en) | 2006-05-01 |
| US7916606B2 (en) | 2011-03-29 |
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