CN100550142C - The record of recording medium, transcriber and method - Google Patents
The record of recording medium, transcriber and method Download PDFInfo
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- CN100550142C CN100550142C CNB2004800004011A CN200480000401A CN100550142C CN 100550142 C CN100550142 C CN 100550142C CN B2004800004011 A CNB2004800004011 A CN B2004800004011A CN 200480000401 A CN200480000401 A CN 200480000401A CN 100550142 C CN100550142 C CN 100550142C
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- 238000001514 detection method Methods 0.000 claims description 12
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- G—PHYSICS
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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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
- G11B20/10—Digital recording or reproducing
- 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
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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
- 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
- G11B2020/122—Burst cutting area [BCA]
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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
- 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
- G11B2020/1229—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 lead-in area
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—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
Abstract
A kind of recording medium; for example high density and/or read-only recording medium (such as BD-ROM); this recording medium comprises with at interval or the copy protection information of the wobbled pits that replaces coding, and formation on this recording medium, record and method of reproducing data and device.
Description
Technical field
The present invention relates to the recording medium such as BD-ROM (Blu-ray Disc), it has and writes at interval or data in shake (or serrate) pit alternately, and the invention still further relates to formation, writes down and reproduce the apparatus and method of this recording medium.
Background technology
Recently, as a kind of novel high-density CD-RW that writes down high capacity high-quality video and voice data, among the standard of blu-ray disc rewritable (BD-RE) is being formulated.Be expected at the foreseeable future, on the market with the Related product of available BD-RE.
Figure 1A has described the structure of BD-RE, and as shown in the figure, it shows the clamper district successively, and district (BCA) is cut off in burst, and zone of transition is introduced the district, data field, and draw-out area.
Shown in Figure 1B, BCA is in the circumferential area of the inner end of BD-RE, at first visits BCA when CD is written into certain reproducer, and it may comprise the information of relevant CD, sequence number for example, and other optional information that is write down in advance by disc manufacturer.
Described introducing district can comprise some pre-assigned zones, and for example first protected location (Guard1), permanent information and control data (PIC) district, second protected location (Guard 2), second block of information (Info 2), and best power will be calibrated (OPC) district.Described first protected location and PIC district are rewritable area for recording the posting field in advance of some primary datas in advance and introduce other zones such as district, data field and draw-out area.
In the PIC district, the important permanent information of CD is encoded with wobbling groove by high frequency modulated (HFM).
The HFM groove is radially modulated by the signal of suitable high bandwidth, thereby is that the information of being duplicated produces the data channel with enough capacity and data transfer rate.
As described in Figure 2, implement the digital coding of shake form by bi-phase modulated.In this modulator approach, value is that 0 binary code is represented by the transformation that bit cell begins to locate, and is represented by the transformation that bit cell begins to locate with the middle part and value is 1 binary code.Bit after the modulation is recorded on the CD with the groove skew from average centerline shown in Figure 2.The length of each bit cell should be 36T, and wherein T is corresponding to the bit length of channel in the rewritable data zone.
Also has read-only Blu-ray Disc (BD-ROM) in company with what BD-RE developed together.As shown in Figure 3, the BD-ROM CD can comprise inner area, clamper district, zone of transition, block of information, and marginarium.
Described block of information can further comprise BCA, introduces the district, data field, draw-out area, and outside area.For BD-RE, BCA can comprise disc important information (DII), for example disc serial number and copy protection information (CPI).If certain BD-ROM is replicated protection, then need the contained main information of BD-ROM to be decrypted with DII.
The same with the master data such as audio/video (A/V) stream that is recorded in the data field, the optical disc information in PIC district can be registered as straight pit.For example, optical disc information can be the big or small data for the error correcting code of 64kb (ECC) piece form of being write as of 17PP modulation.
Yet, because optical disc information can pass through the demodulation of RF signal detecting method, need some demodulation times from BD-ROM, retrieving optical disc information in this situation,
As mentioned above, the contained optical disc information in PIC district that is included in BD-RE can be encoded with wobbling groove by HFM.If this optical disc information is recorded in the PIC district of BD-ROM with the straight pit form, then optical disc reproducing equipment should be able to be taked different detection methods, to obtain the optical disc information based on optical disc types (BD-RE or BD-ROM).Unless chosen correct method, otherwise optical disc reproducing equipment can not detect optical disc information.For example, for a kind of method that is used to detect with optical disc information BD-RE wobbling groove coding, by the HFM modulation, if it is used to BD-ROM, then optical disc reproducing equipment can not be retrieved with the straight pit form and be recorded in optical disc information in the PIC district.
In addition, if the contained disc important information (DII) of BCA can not be retrieved owing to certain read error, then with the impossible data of search records on CD.For example, when retrieving copy protection information (CPI) from BCA, if certain mistake, then may since data can't be decrypted, cause revealing the master data that is recorded in the data field again.
Equally; comprise significant data owing to be recorded in the copy protection information (CPI) in CD PIC district; for example; be used for key data that the encryption master data that is recorded in the data field is decrypted; so in order to protect the encrypted content that is recorded on the CD; this copy protection information should not used any illegality equipment to detect easily, and it is copied to other recording mediums.It can only detect by the predetermined detection method of legitimate device, to guarantee soundness.
Summary of the invention
In the exemplary embodiment, the present invention relates to a kind of recording medium, for example high density and/or read-only recording medium (such as BD-ROM), this recording medium can fast detecting go out to reproduce the required optical disc information of content that is recorded on this medium, the invention still further relates to formation on recording medium, record and method of reproducing data and device.
In the exemplary embodiment, the present invention relates to a kind of recording medium, for example high density and/or read-only recording medium (such as BD-ROM), even mistake has appearred in the one or more positions from recording medium when reading disc important information, this recording medium also can reproduce master data, the invention still further relates to formation on recording medium, record and method of reproducing data and device.
In the exemplary embodiment, the present invention relates to a kind of recording medium, for example high density and/or read-only recording medium (such as BD-ROM), this recording medium comprises that the mode of recording medium that is used for not being copied to other recording medium and/or other type with decryption information to the decryption information that the content that is recorded on the recording medium is decrypted, the invention still further relates to formation on recording medium, record and method of reproducing data and device.
In the exemplary embodiment, the present invention relates to a kind of recording medium, for example high density and/or read-only recording medium (such as BD-ROM), this recording medium is included in the optical disc information of encoding with wobbled pits such as on some sector of the recording medium in PIC district, the invention still further relates to formation on recording medium, record and method of reproducing data and device.
In the exemplary embodiment, the present invention relates to a kind of recording medium, for example high density and/or read-only recording medium (such as BD-ROM), this recording medium is included in the disc important information in one or more positions (for example BCA and another zone except that BCA), the invention still further relates to formation on recording medium, record and method of reproducing data and device.
In the exemplary embodiment; the present invention relates to a kind of recording medium; for example high density and/or read-only recording medium (such as BD-ROM); this recording medium comprises the copy protection information with the wobbled pits coding, the invention still further relates to formation on recording medium, record and method of reproducing data and device.
In the exemplary embodiment; the present invention relates to a kind of recording medium; for example high density and/or read-only recording medium (such as BD-ROM); this recording medium comprises with the copy protection information of distribution mode with the array coding of the wobbled pits of interval formation, the invention still further relates to formation on recording medium, record and method of reproducing data and device.
In the exemplary embodiment; the present invention relates to a kind of recording medium; for example high density and/or read-only recording medium (such as BD-ROM); this recording medium comprises the pit that forms along the track that records data therein; these data comprise and are used to the copy protection information encrypting and/or decipher; wherein; the pit that is formed on the some parts of track is displaced to the left side and/or the right from orbit centre; to form at interval or the wobbled pits that replaces; the key information that wherein is used to encrypt and/or decipher is encoded as from the offset form of the described pit of orbit centre displacement, the invention still further relates on recording medium to form; record and method of reproducing data and device.
In the exemplary embodiment; the present invention relates to formation method such as the recording medium of high density and/or read-only recording medium (such as BD-ROM); this method comprises the step that forms pit along the track that wherein records data; these data comprise and are used to the copy protection information encrypting and/or decipher; wherein; the pit that is formed on the some parts of track is displaced to the left side and/or the right from orbit centre; to form at interval or the pit of alternately shaking, the key information that wherein is used to encrypt and/or decipher is encoded as from the offset form of the described pit of orbit centre displacement.
In the exemplary embodiment; the present invention relates to formation method such as the recording medium of high density and/or read-only recording medium (such as BD-ROM); it comprises the step of utilization with the data of the pit record that forms along track; these data comprise and are used to the copy protection information encrypting and/or decipher; wherein; the pit that is formed on the some parts of track is displaced to the left side and/or the right from orbit centre; to form at interval or the wobbled pits that replaces, the key information that wherein is used to encrypt and/or decipher is encoded as from the offset form of the described pit of orbit centre displacement.
In the exemplary embodiment; the present invention relates to formation method such as the recording medium of high density and/or read-only recording medium (such as BD-ROM); it comprises the step with the record data of the pit that forms along track; these data comprise and are used to the copy protection information encrypting and/or decipher; wherein; the pit that is formed on the some parts of track is displaced to the left side and/or the right from orbit centre; to form at interval or the wobbled pits that replaces, the key information that wherein is used to encrypt and/or decipher is encoded as from the offset form of the described pit of orbit centre displacement.
In the exemplary embodiment; the present invention relates to recording medium such as high density and/or read-only recording medium (such as BD-ROM); it comprises indication information; whether this indication information indication recording medium comprises the copy protection information that is used to produce or handle the user data that is replicated protection; wherein; described indication information and/or described copy protection information are formed jitter mode, and are copied to the specific region.
In the exemplary embodiment, the present invention relates to formation method such as the recording medium of high density and/or read-only recording medium (such as BD-ROM), it comprises the indication information that uses the indication recording medium whether to comprise to be used to the copy protection information that produces or handle the user data that is replicated protection, wherein, described indication information and/or described copy protection information are formed jitter mode, and are copied to the specific region; And based on described copy protection information record data.
In the exemplary embodiment; the present invention relates to recording medium such as high density and/or read-only recording medium (such as BD-ROM); it comprises the first information that is used to produce or handle the user data that is replicated protection; and second information that is used to produce or handle the first information that is replicated protection; wherein this first information and/or second information are formed jitter mode, and are copied to the specific region.
In the exemplary embodiment, the present invention relates to formation method such as the recording medium of high density and/or read-only recording medium (such as BD-ROM), it comprises the first information that is used to produce or handle the user data that is replicated protection, and second information that is used to produce or handle the first information that is replicated protection, wherein this first and/or second information is formed jitter mode, and is copied to the specific region; And the user data of described copy protection is recorded on the described recording medium.
According to one aspect of the invention, a kind of recording medium is provided, it comprises: the first area, be used for jitter mode storage data, wherein indicate recording medium whether to comprise to be used to the indication information and the described copy protection information of the copy protection information that produces or handle the user data that is replicated protection to be formed jitter mode, and on the specific region, repeat described copy protection information with data cell; And second area, be used for straight pit storage data.
According to one aspect of the invention, a kind of method that is used at the recording medium identifying recording layer is provided, it comprises the steps: to write down the indication information whether the indication recording medium comprises the copy protection information that is used to produce or handle the user data that is replicated protection, wherein, described recording step comprises that form with data cell will be formed the original of jitter mode and copy to the specific region with jitter mode or straight line pattern copy protection information; And record is used for record or reproduces the needed control information of data on described specific region.
According to one aspect of the invention, a kind of device that is used at the recording medium identifying recording layer is provided, comprising: record cell, it is configured at this recording medium identifying recording layer; And controller; it is configured to control described record cell and writes down indication information; described indication information indicates this recording medium whether to comprise the copy protection information that is used to produce or handle protected user data; wherein this controller is configured to when the described indication information of record; the original copy protection information that will be formed jitter mode with the form of data cell copies to the specific region with jitter mode or straight line pattern, and record is used for record or reproduces the needed control information of data on described specific region.
According to one aspect of the invention, a kind of method from the recording medium reproducing data is provided, comprise: the indication information that utilizes the indication recording medium whether to comprise to be used to the copy protection information that produces or handle protected user data, wherein, described indication information and/or copy protection information are formed jitter mode, if wherein described indication information indication recording medium comprises described copy protection information, the then described step of utilizing comprises the described copy protection information that detection forms with data cell in the specific region; And if described indication information indicates this recording medium to comprise described copy protection information, then handle protected user data based on detected copy protection information.
According to one aspect of the invention, providing a kind of is used for from the device of recording medium reproducing data, comprise: detecting unit, it is configured to detect indication information, described indication information indicates this recording medium whether to comprise the copy protection information that is used to produce or handle protected user data, this detecting unit also is configured to: if described indication information indication recording medium comprises described copy protection information, then detect the described copy protection information that forms with data cell in the specific region, wherein said indication information and/or copy protection information are formed jitter mode; And data processor, it is configured to: comprise information if described indication information indicates this recording medium to comprise described duplicating, then handle protected user data based on detected copy protection information.
Description of drawings
Accompanying drawing comprises in order further to understand the present invention, and is included into a part that constitutes this instructions in this instructions, and these accompanying drawings show embodiments of the invention, and are used for this instructions principle of the present invention being described.
Among the figure:
Figure 1A and 1B illustrate the structure of existing BD-RE;
Fig. 2 illustrates high frequency modulated (HFM) groove in the PIC district that is formed on BD-RE;
Fig. 3 illustrates the zone of distributing to BD-ROM;
Fig. 4 A-4F illustrates some kinds of recorded forms in the PIC district based on the BD-ROM of exemplary embodiment of the present;
Fig. 5 illustrates an example of exemplary embodiment of the present, and copy protection information is by the array of the wobbled pits that forms with interval coding in this embodiment;
Fig. 6 illustrates the data structure of the physical cluster of BD-ROM in the exemplary embodiment of the present;
Fig. 7 illustrates based on exemplary embodiment of the present, with wobbled pits information encoded and the circuit that is used to detect one hundred million information;
Fig. 8 illustrates based on exemplary embodiment of the present, with straight pit information encoded and the circuit that is used to detect one hundred million information;
Fig. 9 illustrates based on exemplary embodiment of the present, is recorded in the optical disc information field on the BD-ROM;
Figure 10 illustrates based on exemplary embodiment of the present, is recorded in the optical disc types information on the BCA; And
Figure 11 illustrates based on exemplary embodiment of the present, can reproduce the system chart of the optical disc reproducing apparatus of BD-ROM.
Embodiment
For a more complete understanding of the present invention, with reference to the accompanying drawings its exemplary embodiment is described.
With reference to Fig. 3, as mentioned above, can comprise inner area, clamper district, zone of transition, block of information, and marginarium based on the BD-ROM of exemplary embodiment of the present.As described in Fig. 4 A, DII such as the disc serial number and the copy protection information that are recorded among the BCA, is copied to contained PIC district, block of information at least once.This copy protection information can be that the encryption A/V stream master data that is recorded in the data field is decrypted required key value.
Shown in Fig. 4 B, copy protection information can not be recorded in BCA, and only is recorded in the PIC district.This copy protection information also can be called as " ROM mark ", and comprises the additional mark (CPI sign) that is used to represent whether to write down this copy protection information.
As described in Fig. 4 C, information contained among the PIC can be wobbled pits (or sawtooth pit) by partial record, and partial record is a straight pit.Master data can be recorded on the data field with the form of straight pit.
In the exemplary embodiment, this PIC district can comprise 2,720 aggregates of data.First bunch of optical disc information with the wobbled pits record that can comprise by bi-phase modulated.The copy protection information that other bunch can comprise the optical disc information that passes through the 17PP modulation that is recorded as straight pit and have 64KB size ECC piece; the optical disc information that for example is recorded as wobbled pits can detect by the push-pull signal detection method, and the copy protection information that is recorded as straight pit can detect by the RF signal detecting method.Push-pull signal has lower frequency component usually than the RF signal.
In the exemplary embodiment, the DII that copies to the PIC district in addition can encode with wobbled pits, is detected by the RF signal detecting method preventing.
Fig. 4 D, 4E, and 4F has showed several different exemplary data format.In Fig. 4 D, DII is encoded as wobbled pits, and optical disc information is encoded as straight pit.In Fig. 4 E, DII and a part of optical disc information are encoded as wobbled pits.Among Fig. 4 F, DII and optical disc information all are encoded as wobbled pits.
In an example, copy protection information (ROM mark) can be detected by common detection method to prevent it easily with the wobbled pits record that forms at interval, and the data that are recorded in the data field are then formed by straight pit.
Fig. 5 has showed exemplary embodiment of the present invention, and wherein copy protection information is by the arrays of wobbled pits coding to form at interval.
As shown in Figure 5, in order to ensure confidentiality or soundness, preferably the wobbled pits structure of logging interval rather than continuous wobbled pits on the zone be not so that copy protection information is detected easily by detection method usually.
Among Fig. 5, straight pit array (An) and arrays of wobbled pits (Bn) are alternately to form, and the straight pit array is longer than arrays of wobbled pits length, to obtain the different duration.Therefore, wherein the encode wobbled pits of copy protection information is used as noise signal by common detection method.
Can make all straight pit arrays have identical length, also can make all arrays of wobbled pits have identical length.If pit array is uneven in length, that is, if ((n ≠ m), then the appearance of arrays of wobbled pits is acyclic to An ≠ Am for n ≠ m) and Bn ≠ Bm.Can strengthen the confidentiality of copy protection information like this, because customizing messages is by with the probability step-down of wobbled pits coding.
Can adopt multiple other different modulator approach that copy protection information is encoded with wobbled pits.Analog modulation method comprises amplitude modulation (AM), frequency modulation (FM), and Ditital modulation method comprises pulse code modulation (pcm), minimum shift keying (MSK), and binary phase shift keying (BPSK).
Though same modulation technique can be applicable to all arrays of wobbled pits, arrays of wobbled pits can be encoded by different types of modulation technique, to strengthen the confidentiality of copy protection information.For example, in Fig. 5, the first arrays of wobbled pits B1 can pass through amplitude-modulation coding, and the second arrays of wobbled pits B2 can pass through FM encoding, and is like that.
For reducing possible data read errors, in the exemplary embodiment, can be with the identical data of the array repeated encoding of wobbled pits.
And, make up described wobbled pits zone and described non-wobbled pits zone, perhaps make up a plurality of zones, then can detect the bit that is used for copy protection.For example, posting field corresponding to the wobbled pits of data bit is recorded in several zones dispersedly, thereby and form wobbled pits and make that jitter amplitude is very little, like this, just can be by detecting low level push-pull signal, and this signal merged detect this bit.
In the exemplary embodiment, the size of copy protection information is no more than 128 bits, if but added header information and the redundant data that is used for ECC, its big I increases to 1KB.
As shown in Figure 6, as example, the size of the physical cluster of BD-ROM can be 64KB, and comprises 16 address locations.Each data cell can further comprise 31 Frames.Therefore, if first Frame of each address location (Frame #0) is encoded with wobbled pits, with the byte of record copy protection information, then physical cluster can be stored to nearly 16 bytes.
So size can be contained in 64 bunches for the copy protection information of 1K.If exemplary PIC district comprises 2,720 bunches, then this PIC district will have enough spaces with storing copy protection information at least once.In addition, copy protection information can be recorded in the PIC district more than once, to strengthen recorded reliability.
In other exemplary embodiment, also the Frame of each address location except that first Frame can be formed wobbled pits, or the Frame more than two of each address location is formed wobbled pits, with the coding copy protection information.
Be different from copy protection information is coded in the fixed data frames of each data cell, information also can be coded in the arbitrary data frame in each address location.In this exemplary embodiment, the generation of the low frequency signal of being created by wobbled pits is acyclic, and therefore, as mentioned above, can strengthen the confidentiality of this information.
Copy protection information also can be registered as straight pit.In this exemplary embodiment, can encrypt it before this copy protection information, and the key value that is used to decipher the copy protection information of this encryption can be encoded with wobbled pits, thereby prevent bootlegging related content at record.
Fig. 7 illustrates by the optical disc information of bi-phase modulated with the wobbled pits coding, and the circuit that is used to detect this information, wherein, example value " 0101 " is by in the bi-phase modulated mode, for example, the HFM groove of bi-phase modulated is encoded, and encodes with wobbled pits.In this example, data bit is registered as mark and the interval that length is 36T, and it comprises 6 3T marks.The pit of the pit of 6 representatives " 1 " and 6 representatives " 0 " is shifted from the central authorities of track in the opposite direction.
As shown in Figure 7, the structure by the bi-phase modulated gained is different from the structure shown in Fig. 2.That is to say that it is 0 bit that the method among Fig. 2 has value, its transformation by the beginning that occurs in bit cell represents, and value be 1 bit by occur in bit cell begin and middle transformation is represented.On the other hand, it is 0 bit that the method among Fig. 7 has value, and its transformation by the centre that occurs in low level beginning and high level represents, represents by occurring in rightabout transformation and value is 1 bit.The combination of bit is made up of the data that are used to detect the information that is registered as wobbled pits.This information can be copy protection information, just is used for deciphering the key value of the master data of the recording medium data field that is recorded in shown in Fig. 4 A to 4F.
That is to say that only when the bi-phase modulated data by the HFM modulation were normally detected or reproduce, these wobbled pits data just can reproduced or detection.Equally, only when the wobbled pits data of utilizing normal bi-phase modulated data reproduction that detects or reproduce or detection to be used for copy protection, just may reproduce or decipher master data.
Simultaneously, if the continuous pit that information by with pits encode, will not allow to have equal length occurs, and therefore, the pit that these length differ from one another will occur successively.In this exemplary embodiment, the position of data bit can be in the displacement of the interval of 18T, so that data are encoded with wobbled pits.
Be converted to electric signal by wobbled pits laser light reflected light beam by optical detection apparatus 13-16.
This electric signal can be amplified by push-pull circuit, and wherein signal Ea+Eb and Ec+Ed are amplified separately by amplifying circuit 10,11 respectively, and are created in two differential signals ((Ea+Eb)-(Ec+Ed)) between the amplifying signal by differential amplifier 12 subsequently.By being compared, differential signal 501 and preset level obtain with the wobbled pits coded data.
Similarly, can obtain DII and/or optical disc information (or out of Memory) with wobbled pits coding by push-pull circuit, this push-pull circuit is used to produce the trail-and-error signal, does not have extra error correction and demodulation operation.
When visiting the BCA of BD-ROM.If because cut or other CD distortion and mistake occurred can be retrieved DII from PIC district, and can use the information of retrieval to carry out the information of playback light disc recording.Therefore, but service recorder is recorded in the master data of data field in the deciphering of the decruption key that DII comprised in PIC district.
Because is not by the demodulation gained such as DII and/or optical disc information etc. with the wobbled pits coded data, so when the content among the BD-ROM is copied in another rewritable media, above-mentioned information is not replicated, therefore the enciphered data that copies in the rewritable media can not be decrypted, thereby avoided the bootlegging to the BD-ROM content.
Optical disc information and copy protection information with the straight pit coding shown in Fig. 4 C to 4E can be detected by the described circuit of Fig. 8.
By being converted to electric signal by fluorescence detector 13-16, and electric signal (Ea, Eb, Ec and Ed) is by to amplify by one or more summing amplifiers 20,21 and 22 additions by straight pit laser light reflected bundle.RF signal Ea+Eb+Ec+Ed is converted into the binary pulse sequence as the output valve of summing amplifier 22 by RF unit 23, and is converted to numerical data by the clock signal that is synchronized with binary signal.From numerical data, obtain this original disc information and copy protection information by ECC and detuner 24.
Can read optical disc information and copy protection information by the mode identical with reading and recording master data in the data field with the straight pit coding.
Optical disc information can comprise optical disc information ID, disc information format, and optical disc types ID, and CD capacity/version etc., as shown in Figure 9.The data that are used for indicating the exemplary 3 byte optical disc types ID of optical disc types can be used as 2 bits are recorded in BCA, as shown in figure 10.
For example, if the data of these 2 bits are 00b, corresponding CD is exactly BD-RE.If these data are 01b, then corresponding CD is disposable CD-R BD-R.If these data are 10b, then Dui Ying CD is BD-ROM.
The size of optical disc information and indicate whether that the sign for last optical disc information can be assigned to the reserved field of described optical disc information.
Figure 11 illustrates the structured flowchart of general optic disc reproducer, and it comprises optical pickup apparatus 30, and video disc is play (VDP) system 31, and D/A converter 32.In case be written into CD, be used to carry out 31 pairs of optical disc types information that are recorded on the BCA of signal Processing and servo-controlled VDP system and detect, and carry out suitable servo initialization operation according to the optical disc types that is detected.
With the size of optical disc information and the position that is used to indicate whether to distribute to reserved field, can more accurately detect optical disc information and the copy protection information that is recorded in the PIC district therein by the information of using reserved field for the sign of last optical disc information.
In a further exemplary embodiment, the zone of transition that is used for detecting respectively optical disc information and copy protection information can be dispensed to the PIC district.
As shown in Figure 7; if copy protection information is encrypted and encode with straight pit; then described VDP system 31 detects the decruption key with the wobbled pits coding in the PIC district, so that the copy protection information that reads from straight pit is decrypted, and the copy protection information of deciphering is stored.When reproduction is recorded in the master data of data field, then utilize the copy protection information of storage that master data is decrypted.
Thus; based on the high density of exemplary embodiment of the present, read-only and/or CD and optical disc information recording method repeatable recording to the required important information of recorded contents on the protection CD; and information encoded with wobbled pits; strengthen the reliability of data thus, and prevent bootlegging CD content.
Though this paper discloses definite exemplary embodiment of the present invention, be pointed out that the present invention also can be embodied as other form and non-migration purport of the present invention or essential characteristic.Therefore, this exemplary embodiment all will be counted as illustrative from either side, but not it is determinate, therefore, by appended claim pointed scope of the present invention and the implication of described claim equivalent and all changes in the scope, all should be contemplated as falling with within the scope of the present invention.
Claims (14)
1. method that is used at the recording medium identifying recording layer, it comprises the steps:
The record indication information, whether this indication information indication recording medium comprises the copy protection information that is used to produce or handle the user data that is replicated protection, wherein, described recording step comprises that the original copy protection information that form with data cell will be formed jitter mode copies to the specific region with jitter mode or straight line pattern; And
Record is used for record or reproduces the needed control information of data on described specific region.
2. the method for claim 1, wherein described specific region is the zone that is positioned at the introducing district of described recording medium.
3. the method for claim 1, wherein described indication information and/or described copy protection information are given record by phase modulating method.
4. the method for claim 1, wherein described data cell comprises a plurality of address locations, and each address location comprises a plurality of Frames, and wherein said copy protection information is recorded in the first interior Frame of one or more address locations at least.
5. device that is used at the recording medium identifying recording layer comprises:
Record cell, it is configured at this recording medium identifying recording layer; And
Controller, it is configured to control described record cell and writes down indication information, and described indication information indicates this recording medium whether to comprise the copy protection information that is used to produce or handle protected user data,
Wherein this controller is configured to when the described indication information of record; the original copy protection information that will be formed jitter mode with the form of data cell copies to the specific region with jitter mode or straight line pattern, and record is used for record or reproduces the needed control information of data on described specific region.
6. device as claimed in claim 5, wherein said specific region are the zones that is positioned at the introducing district of described recording medium.
7. device as claimed in claim 5, wherein said controller are configured to write down described control information by the 17PP modulator approach.
8. device as claimed in claim 5; wherein said data cell comprises a plurality of address locations; each address location comprises a plurality of Frames, and described control module is configured to described copy protection information is recorded in each first Frame in the described address location.
9. method from the recording medium reproducing data comprises:
Utilize the indication recording medium whether to comprise to be used to the indication information of the copy protection information that produces or handle protected user data, wherein, described indication information and/or copy protection information are formed jitter mode, if wherein described indication information indication recording medium comprises described copy protection information, the then described step of utilizing comprises the described copy protection information that detection forms with data cell in the specific region; And
If described indication information indicates this recording medium to comprise described copy protection information, then handle protected user data based on detected copy protection information.
10. method as claimed in claim 9 further comprises:
Based on the user data of control information reproduction processes, described control information is that record or reproduction data are required.
11. method as claimed in claim 9, wherein said detection step detects described copy protection information by push-pull method.
12. one kind is used for comprising from the device of recording medium reproducing data:
Detecting unit, it is configured to detect indication information, described indication information indicates this recording medium whether to comprise the copy protection information that is used to produce or handle protected user data, this detecting unit also is configured to: if described indication information indication recording medium comprises described copy protection information, then detect the described copy protection information that forms with data cell in the specific region, wherein said indication information and/or copy protection information are formed jitter mode; And
Data processor, it is configured to: if described indication information indicates this recording medium to comprise described copy protection information, then handle protected user data based on detected copy protection information.
13. device as claimed in claim 12, wherein said data processor is configured to the user data according to the control information reproduction processes, and described control information is that record or reproduction data are required.
14. device as claimed in claim 12, wherein said detecting unit are configured to detect described copy protection information by push-pull method.
Applications Claiming Priority (4)
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| KR1020030004487A KR100716420B1 (en) | 2003-01-23 | 2003-01-23 | Method for managing a disc information of high density optical disc |
| KR1020030004487 | 2003-01-23 | ||
| KR1020030005211 | 2003-01-27 | ||
| KR1020030016139 | 2003-03-14 |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101010528A Division CN101051478A (en) | 2003-01-23 | 2004-01-20 | Recording medium and apparatus and methods for forming, recording, and reproducing the recording medium |
| CN2007101010532A Division CN101051479B (en) | 2003-01-23 | 2004-01-20 | Recording medium and apparatus and methods for forming, recording, and reproducing the recording medium |
| CN2006100594838A Division CN1828753B (en) | 2003-01-23 | 2004-01-20 | Recording medium and methods for recording, and reproducing the data of recording medium |
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| CN1698104A CN1698104A (en) | 2005-11-16 |
| CN100550142C true CN100550142C (en) | 2009-10-14 |
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| CN2007101622647A Expired - Fee Related CN101188117B (en) | 2003-01-23 | 2004-01-20 | Recording medium with wobbled pits and apparatus and methods for using same |
| CN2007101010532A Expired - Fee Related CN101051479B (en) | 2003-01-23 | 2004-01-20 | Recording medium and apparatus and methods for forming, recording, and reproducing the recording medium |
| CN2004800004007A Expired - Fee Related CN1698103B (en) | 2003-01-23 | 2004-01-20 | Recording medium with an intermittent or alternate wobbled pits and apparatus and methods for using same |
| CN2006100594838A Expired - Fee Related CN1828753B (en) | 2003-01-23 | 2004-01-20 | Recording medium and methods for recording, and reproducing the data of recording medium |
| CNB2004800004011A Expired - Lifetime CN100550142C (en) | 2003-01-23 | 2004-01-20 | The record of recording medium, transcriber and method |
| CNA2007101010528A Pending CN101051478A (en) | 2003-01-23 | 2004-01-20 | Recording medium and apparatus and methods for forming, recording, and reproducing the recording medium |
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| CN2007101622647A Expired - Fee Related CN101188117B (en) | 2003-01-23 | 2004-01-20 | Recording medium with wobbled pits and apparatus and methods for using same |
| CN2007101010532A Expired - Fee Related CN101051479B (en) | 2003-01-23 | 2004-01-20 | Recording medium and apparatus and methods for forming, recording, and reproducing the recording medium |
| CN2004800004007A Expired - Fee Related CN1698103B (en) | 2003-01-23 | 2004-01-20 | Recording medium with an intermittent or alternate wobbled pits and apparatus and methods for using same |
| CN2006100594838A Expired - Fee Related CN1828753B (en) | 2003-01-23 | 2004-01-20 | Recording medium and methods for recording, and reproducing the data of recording medium |
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| CNA2007101010528A Pending CN101051478A (en) | 2003-01-23 | 2004-01-20 | Recording medium and apparatus and methods for forming, recording, and reproducing the recording medium |
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| KR100936032B1 (en) * | 2003-06-28 | 2010-01-11 | 삼성전자주식회사 | Information storage medium |
| CN114679949B (en) * | 2020-12-30 | 2024-03-15 | 南京泉峰科技有限公司 | Self-driven equipment system and charging station |
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| JPH08147704A (en) * | 1994-11-18 | 1996-06-07 | Sony Corp | Disk-shaped recording medium, and disk reproduction method and device |
| DE69634850T2 (en) * | 1995-10-09 | 2006-05-18 | Matsushita Electric Industrial Co., Ltd., Kadoma | INFORMATION RECEIVING CARRIER, INFORMATION REPRODUCER AND INFORMATION REPRODUCTION PROCESS |
| US5809006A (en) * | 1996-05-31 | 1998-09-15 | Cagent Technologies, Inc. | Optical disk with copy protection, and apparatus and method for recording and reproducing same |
| WO1997050081A1 (en) * | 1996-06-27 | 1997-12-31 | Philips Electronics N.V. | Information carrier containing auxiliary information, reading device and method of manufacturing such an information carrier |
| KR100601611B1 (en) * | 1999-07-08 | 2006-07-14 | 삼성전자주식회사 | Tracking error detecting method of optical disk driver and apparatus therefor |
| JP2002197674A (en) * | 2000-12-27 | 2002-07-12 | Toshiba Corp | Optical disk and optical disk ruggedness device |
| JP2003006997A (en) * | 2001-06-21 | 2003-01-10 | Sony Corp | Optical disk, method for manufacturing optical disk, method for disk drive, and disk drive |
| KR20040048476A (en) * | 2002-12-03 | 2004-06-10 | 삼성전자주식회사 | Optical information reproducing apparatus and method |
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2004
- 2004-01-20 CN CN2007101622647A patent/CN101188117B/en not_active Expired - Fee Related
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- 2004-01-20 CN CN2004800004007A patent/CN1698103B/en not_active Expired - Fee Related
- 2004-01-20 CN CN2006100594838A patent/CN1828753B/en not_active Expired - Fee Related
- 2004-01-20 CN CNB2004800004011A patent/CN100550142C/en not_active Expired - Lifetime
- 2004-01-20 CN CNA2007101010528A patent/CN101051478A/en active Pending
Also Published As
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| CN1698104A (en) | 2005-11-16 |
| CN101051478A (en) | 2007-10-10 |
| CN1698103B (en) | 2011-05-25 |
| KR20040067406A (en) | 2004-07-30 |
| CN1828753B (en) | 2012-08-15 |
| CN101188117B (en) | 2013-01-23 |
| CN101188117A (en) | 2008-05-28 |
| CN1828753A (en) | 2006-09-06 |
| CN101051479B (en) | 2012-10-31 |
| KR100716420B1 (en) | 2007-05-08 |
| CN1698103A (en) | 2005-11-16 |
| CN101051479A (en) | 2007-10-10 |
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