CN101325064B - Optical recording medium, optical reproduction apparatus, and optical reproduction method - Google Patents
Optical recording medium, optical reproduction apparatus, and optical reproduction method Download PDFInfo
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- CN101325064B CN101325064B CN 200810110382 CN200810110382A CN101325064B CN 101325064 B CN101325064 B CN 101325064B CN 200810110382 CN200810110382 CN 200810110382 CN 200810110382 A CN200810110382 A CN 200810110382A CN 101325064 B CN101325064 B CN 101325064B
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Abstract
An optical recording medium comprises a plurality of identifiers in association with address information, wherein: each identifier is provided on the optical recording medium; and each identifiercomprises at least one of: a first pattern provided on the optical recording medium and representinga first code expressed by one bit; a second pattern provided on the optical recording medium and representing a second code expressed by one bit; and a third pattern provided on the optical recording medium and representing a third code expressed by one bit.
Description
The application be submit to January 23 calendar year 2001, application number is 01804077.2, name is called dividing an application of " optical recording media, optical reproduction apparatus and light reproducting method ".
Technical field
The present invention relates to a kind of optical recording media, wherein, apply light beam, light beam converges on the recording medium, detects from the reverse light of recording medium, reproduces the information that is recorded in the recording medium.
Background technology
Recently, use CD to come store video usually.Requirement can be recorded the high density of the long video of high-quality and reproduction time and high-speed CD.In order to satisfy this requirement, recording medium need have littler structure.In addition, need to reduce the size that is called as top area (overhead region).This top area, for example address area be the direct relation information capacity not.
Figure 13 is the figure CD of the described DVD-RAM of the having form of Nikkei Electronics167-186 on the 20th page or leaf October in 1997 (for example referring to) of the track structure in the routine dish of expression light beam irradiates.In Figure 13,901 expression sector, i.e. message units, 902 expressions comprise the identifying information portion of address information, form with pre-pits when making CD records identifying information portion, and this identifying information portion can not be rewritten, and 903 expressions can be recorded record and the recapiulation with information reproduction.Record and recapiulation 903 comprise groove track 904 and are arranged on ridge track 905 between the groove track 904.Can use ridge track 905 and groove track 904 to come recorded information.Identifying information portion 902 comprises title portion 906 and symmetry (mirror) portion 907, comes record header portion and symmetrical portion with the form of pre-pits when making CD, and this title portion and symmetrical portion can not be rewritten.
The structure of a sector in the conventional CD is described with reference to Figure 14.In CD, there are a series of sectors 901 as record and reproduction minimum unit.Sector 901 comprises identifying information portion 902 and record and recapiulation 903.Identifying information portion 902 comprises the title portion 906 with 128 byte lengths and the symmetrical portion 907 with 2 byte lengths.The length of record and recapiulation 903 is 2567 bytes.Comprise the data of totally 2697 bytes in the sector 901.Record and recapiulation 903 comprise the user therein record data data portion 1007 and wherein record the appendix 1006 and 1008 of VFO (variable frequency oscillator).VFO is used for attracting to reproduce the required PLL (phaselocked loop) of user data.
In conventional CD, record position information in title portion 906 is used for confirming light beam tracks to go up which sector of which one in dish.The positional information of title portion 906 is represented the position corresponding to the sector 901 of title portion 906.Particularly, has the title portion 906 that has recorded positional information " 123456 " by address " 123456 " specific sector 901.
Positional information has the length of 4 bytes.At the error-detecting signal of additional 2 bytes of this positional information, to confirm whether correctly to reproduce positional information.With be recorded in record and recapiulation 903 in the identical density of user data come record position information.Identical with user data, must use PLL to reproduce positional information.Record position information quadruply, positional information has the length of 128 bytes, can guarantee to use the reliability that the computer external of this dish arranges.
But there is following problem in above-mentioned routine techniques.For example, the conventional CD that has wherein recorded 2048 bytes of user data in a sector comprises: the title portion 906 of 128 bytes and the symmetrical portion 907 of 2 bytes, be used to indicate the border between title portion 906 and record and the recapiulation 903, light beam for confirmation tracks to go up which sector of which part in dish; The appendix 1006 of 68 bytes and the appendix 1008 of 81 bytes, data being recorded in record and the recapiulation 903, attraction PLL or the dummy section of record data is provided.
Under the situation of DVD, modulate record data itself for error correction.When carrying out the 8-16 modulation, data portion 1007 need have the size of 2418 bytes.Therefore, for the user data in disc recording 2048 bytes, a sector need have the overall dimensions of 2679 bytes.At this moment, the format efficiency of dish is 2048/2679 (=0.759).That is, 75.9% of dish is used to tracer signal, and remains 24.1%.
For example, under the situation of the data that recorded the 4.7GB size, be that 100% dish is compared with having format efficiency, the dish per unit area with 75.9% format efficiency has bigger quantity of information.For this reason, the latter has than the former low quality when record and reproducing signal.
The present invention is proposed in order to address the above problem.The object of the present invention is to provide a kind of more multidata optical recording media of routine dish that records than same size, wherein, reduce the residue of title portion and appendix, thus can higher format efficiency ground format optical recording media.
Summary of the invention
Optical recording media according to the present invention comprises: a plurality of identifiers that interrelate with address information, and wherein, each identifier is positioned on the optical recording media; And each identifier comprises at least: one first pattern (pattern), be positioned on the optical recording media, and expression is by a first code of a bit representation; One second pattern is positioned on the optical recording media, and expression is by a second code of a bit representation; With a three-mode, be positioned on the optical recording media, expression is by a third generation sign indicating number of a bit representation.Therefore, can realize above-mentioned purpose of the present invention.
First code comprises " 0 ", and second code comprises " 1 ", and third generation sign indicating number comprises " S " of expression one sync mark.
Each identifier comprises one or more pre-pits or mark and/or one or more spaces that are positioned on the optical recording media that are positioned on the optical recording media.
In first, second, and third pattern each all has the pre-pits that is positioned on the optical recording media.Each of first and second patterns also has one second pre-pits and first space between first and second pre-pits, and first and second pre-pits and first space are positioned on the optical recording media.First pre-pits has length P1, and second pre-pits has length P2.Under first pattern, P1＞P2, under second pattern, P1＜P2.
First space has length S1.Under first pattern, P1=8 * Tw, S1=4 * Tw and P2=4 * Tw, under second pattern, P1=4 * Tw, S1=4 * Tw and P2=8 * Tw, under three-mode, P1=16 * Tw, wherein, Tw is the detection window width.
Three-mode comprises: a four-mode comprises first pre-pits and is positioned at first pre-pits, second space afterwards that this second space is positioned on the optical recording media; With one the 5th pattern, comprise first pre-pits and be positioned at first pre-pits, second space before.
Second space has length S2.Under the 4th and the 5th pattern, P1=12 * Tw and S2=4 * Tw, wherein, Tw is the detection window width.
Optical recording media comprises first and second information sides.Third generation sign indicating number comprises expression first sync mark and is recorded in the lip-deep code of the first information " S1 " and represents second sync mark and be recorded in code " S2 " on second information sides.Four-mode is represented code " S1 ".The 5th modal representation code " S2 ".
Each of first, second, and third pattern all has first space that is positioned on the optical recording media.Each of first and second patterns has the pre-pits of one second space and between first and second spaces, and second space and pre-pits are positioned on the optical recording media.First space has length P1, and second space has length P2.Under first pattern, P1＞P2, under second pattern, P1＜P2.First pre-pits has length S1.Under first pattern, P1=8 * * Tw, S1=4 * Tw and P2=4 * Tw, under second pattern, P1=4 * Tw, S1=4 * Tw and P2=8 * * Tw, under three-mode, P1=16 * Tw, wherein, Tw is the detection window width.
Each all has length T 1 first, second, and third pattern.First pattern comprises one first space and is positioned at this first space first pre-pits afterwards that first space and first pre-pits are positioned on the optical recording media.Second pattern comprises one second space and is positioned at this second space second pre-pits afterwards that second space and second pre-pits are positioned on the optical recording media.Three-mode comprises one the 3rd space and is positioned at the 3rd space the 3rd pre-pits afterwards that the 3rd space and the 3rd pre-pits are positioned on the optical recording media.First, second, and third space has mutually different length P1, P2 and P3 respectively.
Each all has length T 1 first, second, and third pattern.First pattern comprises one first pre-pits and is positioned at this first pre-pits first space afterwards that first pre-pits and first space are positioned on the optical recording media.Second pattern comprises one second pre-pits and is positioned at this second pre-pits second space afterwards that second pre-pits and second space are positioned on the optical recording media.Three-mode comprises one the 3rd pre-pits and is positioned at the 3rd pre-pits the 3rd space afterwards that the 3rd pre-pits and the 3rd space are positioned on the optical recording media.First, second, and third pre-pits has mutually different length P1, P2 and P3 respectively.
Optical recording media comprises an address block, and this address block comprises a plurality of sectors that interrelate with address information.Each sector comprises an identifying information portion and record and a recapiulation.Identifying information portion comprises a title portion.One of a plurality of identifiers are arranged in title portion.
Address information is represented the address of address block.Address information is recorded in the address block.Address information is represented in the combination of available first, second, and third code.
At least one title portion comprises the part in a plurality of identifiers.
Optical recording media comprises a plurality of districts, and the quantity in these districts is different with the quantity that is positioned at track identifying information portion on every side.The part of a plurality of sectors on having a common boundary between each district is inactive area, does not allow to record the information in the part of described a plurality of sectors.One of a plurality of identifiers of one of identifying information portion that are arranged in each sector of the described a plurality of sectors part that is present in inactive area comprise the three-mode of expression third generation sign indicating number.
Optical recording media has ridge and groove, and ridge and flute profile become concentric circles and continuous helical.Information is recorded in ridge and/or the groove.Each sector comprises the ridge sector that is positioned at keel and is positioned at the groove sector of groove.
Ridge and groove have ridge track centerline and groove track center line respectively.Interior or outer circumferential sides from ridge track centerline or from groove track center line to optical recording media is provided at predetermined intervals each identifier.Corresponding to the ridge track centerline, a plurality of identifiers any two asymmetrical relative to one another.Corresponding to the groove track center line, a plurality of identifiers any two asymmetrical relative to one another.
Another of one of a plurality of identifiers that are positioned at inner circumferential side corresponding to the groove track center line and a plurality of identifiers that are positioned at outer circumferential sides corresponding to the groove track center line is identical.
Another of one of a plurality of identifiers that are positioned at inner circumferential side corresponding to the ridge track centerline and a plurality of identifiers that are positioned at outer circumferential sides corresponding to the ridge track centerline is identical.
Address information comprises a parity check bit.
Optical recording media comprises a plurality of information sides, and address information comprises the level number of identification each in a plurality of information sides.
Reproduce the information that is recorded on the optical recording media according to optical reproduction apparatus of the present invention, this optical recording media comprises a plurality of identifiers that interrelate with address information, and wherein: each identifier is positioned on the optical recording media; Each identifier comprises one of following at least pattern: be positioned at first pattern of also representing on the optical recording media by the first code of a bit representation; Be positioned at second pattern of also representing on the optical recording media by the second code of a bit representation; Also represent on the optical recording media that with being positioned at this equipment comprises: the semiconductor laser instrument is applied to the resulting hot spot of convergent beam on the optical recording media by the three-mode of the third generation sign indicating number of a bit representation; Optical detection part receives from the optical recording media beam reflected, and output is corresponding to the voltage signal of folded light beam amount; With address detected portion, detect address information according to the voltage signal from optical detection part output.Therefore, can realize above-mentioned purpose of the present invention.
Smooth reproducting method according to the present invention reproduces the information that is recorded on the optical recording media, and this optical recording media comprises a plurality of identifiers that interrelate with address information, and wherein: each identifier is positioned on the optical recording media; Each identifier comprises one of following at least pattern: be positioned at first pattern of also representing on the optical recording media by the first code of a bit representation; Be positioned at second pattern of also representing on the optical recording media by the second code of a bit representation; Also represent on the optical recording media that with being positioned at this method may further comprise the steps: the resulting hot spot of convergent beam is applied on the optical recording media by the three-mode of the third generation sign indicating number of a bit representation; Reception is from the optical recording media beam reflected, and output is corresponding to the voltage signal of folded light beam amount; The voltage signal of exporting from optical detection part with basis detects address information.
Method according to making optical recording media of the present invention, comprise the steps: to form a plurality of identifiers relevant with address information, form first pattern at described optical recording media, this first pattern representative is by the first code of a bit representation, and this first code is " 0 "; Form second pattern at described optical recording media, this second pattern representative is by the second code of a bit representation, and this second code is " 1 "; With form three-mode at described optical recording media, this three-mode representative is by the third generation sign indicating number of a bit representation, this third generation sign indicating number is " S " of expression sync mark; Wherein said optical recording media comprises a plurality of address blocks, each address block in these a plurality of address blocks has a plurality of unit, each unit in these a plurality of unit has identifying information portion, and each in wherein said a plurality of identifiers is arranged in the described identifying information portion of described each unit; And wherein said address information is to be represented by described first pattern of the back that is arranged on described three-mode and the combination of second pattern.Therefore, can realize above-mentioned purpose of the present invention.
Description of drawings
Fig. 1 is the figure that represents according to the compact disk structure of the embodiment of the invention 1,
Fig. 2 is the figure of address information structure in the CD of the explanation embodiment of the invention 1,
Fig. 3 is the figure of physical arrangement of the CD ID of the explanation embodiment of the invention 1,
Fig. 4 be the explanation embodiment of the invention 1 CD in address block structured figure,
Fig. 5 is the figure that represents according to the compact disk structure of the embodiment of the invention 2,
Fig. 6 is the figure that represents according to the compact disk structure of the embodiment of the invention 3,
Fig. 7 is the figure that represents according to the compact disk structure of the embodiment of the invention 4,
Fig. 8 is the figure that represents according to the compact disk equipment structure of the embodiment of the invention 5,
Fig. 9 is the figure that represents according to the compact disk structure of the embodiment of the invention 6,
Figure 10 is the figure that represents according to the compact disk structure of the embodiment of the invention 7,
Figure 11 A and 11b are the figure that illustrates according to address information structure in the CD of the embodiment of the invention 8,
Figure 12 be explanation according to the figure of the physical arrangement of the CD ID of the embodiment of the invention 8,
Figure 13 be the expression conventional CD structure figure and
Figure 14 is the figure of the sector strucre of the conventional CD of expression.
Embodiment
Below, with reference to accompanying drawing, by illustrative embodiment the present invention is described.Fig. 1 is that expression is according to the figure of the structure of the CD (optical recording media) of the embodiment of the invention 1.Fig. 1 represents the part-structure of track 100, and getting on the right track at dish forms concentric circles or spirality.
With reference to Fig. 1, track 100 comprises a plurality of address blocks 108.An address block 108 comprises a groove sector portion 110 and a ridge sector portion 109.Ridge sector portion 109 comprises a plurality of ridges sector 109A, 109B, 109C and 109D.A groove sector portion 110 comprises a plurality of grooves sector 110A, 110B, 110C and 110D.Each ridge sector 109A, 109B, 109C and 109D comprise an identifying information portion 111 and record and a recapiulation 112.Each groove sector 110A, 110B, 110C and 110D comprise an identifying information portion 111 and record and a recapiulation 112.
In the identifying information portion 111 of each ridge sector 109A, 109B, 109C and 109D, be partial to position record first identifier (ID) 106 of inner periphery at the center line C2 corresponding to ridge track 102.In the identifying information portion 111 of each groove sector 110A, 110B, 110C and 110D, be partial to position record second identifier (ID) 107 of inner periphery at the center line C1 corresponding to groove track 101.
The address information of expression ridge sector portion 109 positions distributed and be assigned to first identifier (ID) 106 in the identifying information portion 111 of ridge sector 109A, 109B, 109C and 109D.The address information of expression groove sector portion 110 positions distributed and be assigned to second identifier (ID) 107 in the identifying information portion 111 of groove sector 110A, 110B, 110C and 110D.
In Fig. 1, the part address information of representing ridge sector portion 109 positions is assigned to its first identifier 106, the part address information of representing groove sector portion 110 positions is assigned to its second identifier 107.Perhaps, the part address information of representing ridge sector portion 109 positions is assigned to its second identifier 107, the part address information of representing groove sector portion 110 positions is assigned to its first identifier 106.
The address information of expression ridge sector portion 109 positions comprises first identifier (ID) 106 in the identifying information portion 111 of ridge sector 109A, 109B, 109C and 109D.In Fig. 1, obtain to represent the address information of ridge sector portion 109 positions by first identifier 106 of reading and recording in four continuous ridge sector 109A, 109B, 109C and 109D.The address information of expression groove sector portion 110 positions comprises second identifier (ID) 107 in the identifying information portion 111 of groove sector 110A, 110B, 110C and 110D.In Fig. 1, obtain to represent the address information of groove sector portion 110 positions by second identifier 107 of reading and recording in four succeeding vat sector 110A, 110B, 110C and 110D.A whole group sector that constitutes address information is called address block.
Below, the structure of address information is described with reference to Fig. 2.As embodiment, the address information of expression ridge sector portion 109 positions is described.The address information structure of describing expression groove sector portion 110 positions is similar to the address information structure of expression ridge sector portion 109 positions.As mentioned above, each ridge sector portion 109 comprises ridge sector 109A, 109B, 109C and 109D.Each ridge sector 109A, 109B, 109C and 109D comprise identifying information portion 111 and record and recapiulation 112.
In the identifying information portion 111 of ridge sector 109A, provide the pattern corresponding to the synchronous code " S " of expression to be used as the part address information.By reading the position (starting position, sector) of coming the identification address BOB(beginning of block) corresponding to the pattern of code " S ".
In the identifying information portion 111 of ridge sector 109B, provide the pattern corresponding to code " 1 " to be used as the part address information.In the identifying information portion 111 of ridge sector 109C, provide the pattern corresponding to code " 0 " to be used as the part address information.In the identifying information portion 111 of ridge sector 109D, provide the pattern corresponding to code " 0 " to be used as the part address information.
In Fig. 2, four ridge sector 109A, 109B, 109C and 109D constitute an address block, and code " S ", " 1 ", " 0 " and " 0 " are recorded in corresponding ridge sector 109A, 109B, 109C and the 109D continuously.Like this, for this address block, the address information of expression ridge sector portion 109 positions assembles " S100 ".The starting position of cognizance code " S " expression address information." 1 " or three codes such as " 0 " behind the code " S " are binary messages, represent the position of ridge sector portion 109 basically.For example, " S100 " is " 4 " in decimal notation, that is, be the 4th address with the Address Recognition of representing ridge sector portion 109 positions.
The physical arrangement in the zone of wherein recording first identifier 106 is described with reference to Fig. 3.In Fig. 3, mobile spot 301 when scanning from left to right.First mode 3,02 expression code " 0 ", second mode 3,03 expression code " 1 ", four-mode 304 expression codes " S ".
First mode 3 02 of expression code " 0 " comprises two pre-pits 305A and 305B, and the space 306 between these two pre-pits.Pre-pits 305A and 305B have length P1 and P2 respectively.Length P1 is 8 times of detection window width Tw.Length P2 is 4 times of detection window width Tw.The length S1 in space 306 is 4 times of detection window width Tw.At this moment, (P1＞P2), S1 equals P2 (S1=P2) to length P1 greater than length P2.
Second mode 3 03 of expression code " 1 " comprises two pre-pits 305A and 305B, and the space 306 between these two pre-pits.Pre-pits 305A and 305B have length P1 and P2 respectively.Length P1 is 4 times of detection window width Tw.Length P2 is 8 times of detection window width Tw.The length S1 in space 306 is 4 times of detection window width Tw.At this moment, (P2＞P1), S1 equals P1 (S1=P1) to length P1 less than length P2.
The three-mode 304 of expression code " S " comprises a pre-pits 305A.Pre-pits 305A has length P1.Length P1 is 16 times of detection window width Tw.Length P2 is 4 times of detection window width Tw.
In the following manner, the size relationship according to length P1 and P2 defines code " 0 ", " 1 " and " S ".
(1) P1＞P2: code " 0 ",
(2) P2＞P1: code " 1 ",
(3) P1 (P2=0) only: code " S ".
At this moment, length P1 and length P2 are 4Tw, 8Tw or 16Tw, but are not limited to these length.Also can change length P1 and P2 according to the size that is applied to the hot spot on the dish.
When reproducing, by judging between length P1 and the length P2 have difference to come cognizance code according to reproducing waveform.
In Fig. 3, as embodiment, the physical arrangement in the zone of wherein recording first identifier 106 is described.The physical arrangement that wherein records the zone of second identifier 107 is similar to the physical arrangement in the zone of wherein recording first identifier 106.
The structure of address block is described with reference to Fig. 4.As mentioned above, an address block 108 comprises a ridge sector portion 109 and a groove sector portion 110.Ridge sector portion 109 and groove sector portion 110 have same structure.In order to simplify, the structure of only describing ridge sector portion 109 is used as an embodiment.
With reference to Fig. 4, ridge sector portion 109 comprises ridge sector 109A, 109B, 109C and 109D.Ridge sector 109A, 109B, 109C and 109D have identical structure.In order to simplify, the structure of only describing ridge sector 109A is used as an embodiment.Ridge sector 109A comprises an identifying information portion 111 and record and a recapiulation 112.Identifying information portion 111 comprises that length is the title portion of 4 bytes and the symmetrical portion 402 that length is 2 bytes.As shown in Figure 3, title portion 401 is made of pre-pits (or mark) and space.
Record and recapiulation 112 comprise that length is the data portion 403 of 2418 bytes and the appendix 404 and 405 that length is respectively 13 bytes and 26 bytes.In data portion 403, record 8 * 16 modulating datas.Appendix 404 and 405 has VFO (variable frequency oscillator) zone and dummy section (impact damper).The VFO zone is used for attracting to reproduce the required PLL (phaselocked loop) of signal of data portion 403 records.
When recording the user data of 2048 bytes, a sector needs the size of 2463 bytes altogether, comprising the identifying information portion 111 of 6 bytes and record and the recapiulation 112 of 2457 bytes.At this moment, the format efficiency of dish is 2048/2463 (=0.832).That is, 83.2% of dish is used to tracer signal, residue 16.8%.Compare with 24.1% residue of above-mentioned conventional CD, this surplus value has reduced about 10%.
In embodiment 1, the combination in two pre-pits and a space is corresponding to the code " 0 " in the zone of wherein recording first and second identifiers 106 and 107, " 1 " and " S ".Perhaps, replace a pre-pits and a space with a space and a pre-pits respectively.That is, the combination of two spaces and a pre-pits is corresponding to code " 0 ", " 1 " and " S ", thereby can obtain identical effect.
As mentioned above, use a space having two pre-pits (or mark) of different length P1 and P2 and to have a length S1 to identify code in first and second identifiers 106 and 107.Like this, compare with 128 bytes of conventional title portion, the size of title portion can reduce by 4 bytes.Therefore, form dish of the present invention has and comprises and reduce remaining title portion, thereby has rolled up the recording capacity of dish.
Below, with reference to Fig. 5 embodiments of the invention 2 are described.Fig. 5 is that expression is according to the figure of the compact disk structure of the embodiment of the invention 2.Fig. 5 represents the part-structure of track 500, and getting on the right track at dish forms concentric circles or spirality.Among Fig. 5, use with Fig. 1 in the identical part of track 100 on identical symbolic representation and the above-mentioned CD that is positioned at Fig. 1.Therefore omit the detailed description of these parts.
With reference to Fig. 5, track 500 comprises a plurality of address blocks 108.An address block 108 comprises a groove sector portion 110 and a ridge sector portion 109.Ridge sector portion 109 comprises a plurality of ridges sector 109A, 109B, 109C and 109D.Groove sector portion 110 comprises a plurality of grooves sector 110A, 110B, 110C and 110D.Each ridge sector 109A, 109B, 109C and 109D comprise an identifying information portion 111 and record and a recapiulation 112.Each groove sector 110A, 110B, 110C and 110D comprise an identifying information portion 111 and record and a recapiulation 112.
In the identifying information portion 111 of each ridge sector 109A, 109B, 109C and 109D, be partial to position record first identifier 506 and second identifier 507 of inner periphery at the center line C2 corresponding to ridge track 102.In the identifying information portion 111 of each groove sector 110A, 110B, 110C and 110D, be partial to position record the 3rd identifier 509 and the 4th identifier 510 of inner periphery at the center line C1 corresponding to groove track 101.
Description is recorded in the first and the 4th identifier 506 and 510 in the ridge sector portion 109.In the 109A of ridge sector, corresponding to the center line C2 of ridge track 102, first identifier 506 is relative with the 4th identifier 510.In the first and the 4th identifier 506 and 510, use a pre-pits (or mark) and space that model identical corresponding to code " S " is provided.In the 109B of ridge sector, corresponding to the center line C2 of ridge track 102, first identifier 506 is relative with the 4th identifier 510.In the first and the 4th identifier 506 and 510, use a pre-pits (or mark) and space that model identical corresponding to code " 1 " is provided.
In an identical manner the first and the 4th identifier 506 and 510 is distributed to ridge sector 109C and 109D.
Description is recorded in the 3rd and second identifier 509 and 507 in the groove sector portion 110.In the 110A of groove sector, corresponding to the center line C1 of groove track 101, the 3rd identifier 509 is relative with second identifier 507.In the 3rd and second identifier 509 and 507, use a pre-pits (or mark) and space that model identical corresponding to code " S " is provided.In the 110B of groove sector, corresponding to the center line C1 of groove track 101, the 3rd identifier 509 is relative with second identifier 507.In the first and the 4th identifier 506 and 510, use a pre-pits (or mark) and space that model identical corresponding to code " 1 " is provided.
In an identical manner the 3rd and second identifier 509 and 507 is distributed to groove sector 110C and 110D.
Give the first and the 4th identifier 506 and 510 with the part address information distribution of ridge sector portion 109, give the 3rd and second identifier 509 and 507 with the part address information distribution of groove sector portion 110.Perhaps, also available other combination.For example, give the 3rd and second identifier 509 and 507 with the part address information distribution of ridge sector portion 109, give the first and the 4th identifier 506 and 510 with the part address information distribution of groove sector portion 110.
That describes in the structure of address information and the embodiment of the invention shown in Fig. 21 is identical.That describes in the physical arrangement of identifier and the embodiment of the invention shown in Fig. 31 is identical.That describes in the structure of address block and the embodiment of the invention shown in Fig. 41 is identical.
As mentioned above, use a space having two pre-pits (or mark) of different length P1 and P2 and to have a length S1 to identify code in first and second identifiers 106 and 107.Like this, compare with 128 bytes of conventional title portion, the size of title portion can reduce by 4 bytes.Therefore, form dish of the present invention has and comprises and reduce remaining title portion, thereby has rolled up the recording capacity of dish.
Embodiment 3
Below, with reference to Fig. 6 embodiments of the invention 3 are described.Fig. 6 is that expression is according to the figure of the compact disk structure of the embodiment of the invention 3.Fig. 6 represents the part-structure of track 600, and getting on the right track at dish forms concentric circles or spirality.Among Fig. 6, use with Fig. 1 in the identical part of track 100 on identical symbolic representation and the above-mentioned CD that is positioned at Fig. 1.Therefore omit the detailed description of these parts.
With reference to Fig. 6, track 600 comprises a plurality of address blocks 108.An address block 108 comprises a groove sector portion 110 and a ridge sector portion 109.Ridge sector portion 109 comprises a plurality of ridges sector 109A, 109B, 109C and 109D.Groove sector portion 110 comprises a plurality of grooves sector 110A, 110B, 110C and 110D.Each ridge sector 109A, 109B, 109C and 109D comprise an identifying information portion 111 and record and a recapiulation 112.Each groove sector 110A, 110B, 110C and 110D comprise an identifying information portion 111 and record and a recapiulation 112.
In the identifying information portion 111 of each ridge sector 109A, 109B, 109C and 109D, be partial to position record first identifier 606 and second identifier 607 of inner periphery at the center line C2 corresponding to ridge track 102.In the identifying information portion 111 of each groove sector 110A, 110B, 110C and 110D, be partial to position record the 3rd identifier 609 and the 4th identifier 610 of inner periphery at the center line C1 corresponding to groove track 101.
Description is recorded in first and second identifiers 606 and 607 in the ridge sector portion 109.In first identifier 606 and second identifier 607 of ridge sector 109A, use a pre-pits (or mark) and space that model identical corresponding to code " S " is provided.In first identifier 606 and second identifier 607 of ridge sector 109B, use a pre-pits (or mark) and space that model identical corresponding to code " 1 " is provided.First identifier 606 and second identifier 607 are distributed to each of ridge sector 109C and 109D by mode same as described above.
Below, third and fourth identifier 609 and 610 that is recorded in the groove sector portion 110 is described.In third and fourth identifier 609 and 610 of groove sector 110A, use a pre-pits (or mark) and space that model identical corresponding to code " S " is provided.In third and fourth identifier 609 and 610 of groove sector 110B, use a pre-pits (or mark) and space that model identical corresponding to code " 1 " is provided.By identical mode third and fourth identifier 609 and 610 is distributed to groove sector 110C and 110D.
Give first and second identifiers 606 and 607 with the part address information distribution of ridge sector portion 109, give third and fourth identifier 609 and 610 with the part address information distribution of groove sector portion 110.Perhaps, also available other combination.For example, give third and fourth identifier 609 and 610 with the part address information distribution of ridge sector portion 109, give first and second identifiers 606 and 607 with the part address information distribution of groove sector portion 110.
That describes in the structure of address information and the embodiment of the invention shown in Fig. 21 is identical.That describes in the physical arrangement of identifier and the embodiment of the invention shown in Fig. 31 is identical.That describes in the structure of address block and the embodiment of the invention shown in Fig. 41 is identical.
As mentioned above, use a space having two pre-pits (or mark) of different length P1 and P2 and to have a length S1 to come the identifier of identification record in identifying information portion 111.Like this, compare with 128 bytes of conventional title portion, the size of title portion can reduce by 4 bytes.Therefore, form dish of the present invention has and comprises and reduce remaining title portion, thereby has rolled up the recording capacity of dish.
Below, embodiment 4 with reference to the accompanying drawings to describe the present invention.Fig. 7 is that expression is according to the figure of the compact disk structure of the embodiment of the invention 4.Fig. 7 represents the boundary between ZCLV (Zone CLV) the form dish Shang Ge district consistent with DVD RAM version 1 and 2.In Fig. 7, use with Fig. 1 in the identical part of track 100 on identical symbolic representation and the above-mentioned CD that is positioned at Fig. 1.Therefore omit the detailed description of these parts.
Under ZCLV dish form, ectoloph track and the interior groove track in each district are invalid track or invalid sector distinguishing intersection.In invalid sector, do not allow recorded information in record and recapiulation 112.
As shown in Figure 7, cognizance code " S " is distributed to first and second identifiers 706 and 707 of invalid sector 708 stems, with this invalid sector of identification.At this moment, when in a plurality of contiguous sectors, detecting cognizance code " S ", determine that these sectors are invalid.
As mentioned above, when the identifier of each expression cognizance code " S " is positioned at a plurality of contiguous sector, if determine that above-mentioned sector is invalid, then can prevent recorded information in invalid sector, thereby improve the reliability of CD.
Embodiment 5
Below, with reference to Fig. 8 embodiments of the invention 5 are described.Fig. 8 is that expression is according to the figure of the compact disk equipment 800 of the embodiment of the invention 5.CD arranges 800 and comprises semiconductor laser 802, collimation lens 803, beam splitter 804, convergent portion 805, collector lens 806, optical detection part 807, reproducing signal operating portion 808, focus control portion 809, tracking control section 810, actuator 811, address detected portion 812 and laser drive part 813.
Describe below and reproduce operation.CD 801 is CDs of the embodiment of the invention 1 for example.Light beam is converged to hot spot, and this hot spot is applied to record and recapiulation, the identifying information portion etc. of the CD 801 that therefrom reads information.
The light beam of launching from semiconductor laser 802 passes collimation lens 803 and beam splitter 804, is converged on the CD 801 by convergent portion 805.From CD 801 reflected back hot spots, the light that is reflected passes convergent portion 805 and beam splitter 804, is gathered on the optical detection part 807 by collector lens 806.Light receiving element A, the B of optical detection part 807, C and D receive the light of being assembled, and each element is exported corresponding to the voltage signal that receives light quantity.808 pairs of voltage signals of reproducing signal operating portion carry out arithmetical operation.
Reproducing signal operating portion 808 is exported to focus control portion 809 with focus error signal FE.Reproducing signal operating portion 808 is also exported to tracking control section 810 with trail-and-error signal TE.Reproducing signal operating portion 808 is also exported to address detected portion 812 with reproducing signal RF and trail-and-error signal TE.
809 outputs of focus control portion are corresponding to the voltage of focus error signal FE, and this voltage driving actuator 811 is adjusted to the focal position of hot spot on the surface of CD 801.Tracking control section 810 outputs are corresponding to the voltage of trail-and-error TE, and this voltage driving actuator 811 is positioned on the CD 801 lip-deep expectation tracing positionals accumulation of hot spot.
In focus control with follow the tracks of under the control and use hot spot, read recessed or protruding pre-pits mark and the space of different brightness (or have because of reflection coefficients different on the phase change disc), reproduce the information that is recorded on the CD.
Address detected portion 812 receives the output of reproducing signal operating portion 808, according to coming detection of code " 0 ", " 1 " and " S " from the reproducing signal RE of identifying information portion and pulse width and the pulse mode of trail-and-error signal TE.Connect a sector according to a sector, detected code temporarily is stored in the storer as part address information (ID).When reading the ID of all sectors in the address block, come calculated address number according to the ID that obtains, with the address number of identification address piece.
Embodiment 6
Below, with reference to Fig. 9 embodiments of the invention 6 are described.Fig. 9 is that expression is according to the figure of the compact disk structure of the embodiment of the invention 6.In Fig. 9, use with Fig. 1 in the identical part of track 100 on identical symbolic representation and the above-mentioned CD that is positioned at Fig. 1.Therefore omit the detailed description of these parts.
With reference to Fig. 9, ridge sector 109A comprises identifying information portion 111 and record and recapiulation 112.Groove sector 110A comprises identifying information portion 111 and record and recapiulation 112.
The center line C1 that first identifier 1108 is arranged in corresponding to the groove track 101 of the identifying information portion 111 of each groove sector 110A is partial on the position of inner periphery.The center line C2 that second identifier 1109 is arranged in corresponding to the ridge track 102 of the identifying information portion 111 of each ridge sector 109A is partial on the position of inner periphery.
As shown in Figure 9, first identifier 1108 is arranged in the first half of identifying information portion 111, and second identifier 1109 is arranged in the second half of identifying information portion 111.As shown in Figure 9, first and second identifiers 1108 and 1109 have pre-pits and the space that is arranged in interleaving mode.Record data in ridge track 102 and groove track 101.
Record and recapiulation 112 are present in a plurality of sectors, and identifying information portion 111 is between each record and recapiulation 112.Address information is assigned to the sector location group that comprises a plurality of ridges sector or a plurality of grooves sector.The information of a position of prior recording address information in first and second identifiers 1108 and 1109.The address information of representing the sector with the combination of first and second identifiers 1108 of a plurality of contiguous sectors and 1109.
The part (position) of the address information of ridge sector is distributed to first identifier 1108, and the part (position) of the address information of groove sector is distributed to second identifier 1109.Perhaps, the part (position) of the address information of ridge sector is distributed to second identifier 1109, and the part (position) of the address information of groove sector is distributed to first identifier 1108.
The physical arrangement of first and second identifiers 1108 and 1109 is described.In Fig. 9, first and second identifiers 1108 and 1109 comprise that the center line C2 corresponding to the center line C1 of groove track 101 and ridge track 102 is arranged to pre-pits 1104 and the space 1105 of interleaving mode.In first and second identifiers 1108 and 1109, the length of each pre-pits 1104 depends on the code of the expression of being represented by this pre-pits.As shown in Figure 9, the whole limit of each pre-pits 1104 in first identifier 1108 is positioned on the same straight line substantially.Equally, the whole limit of each pre-pits 1104 in second identifier 1109 is positioned on the same straight line substantially.
Coding is described below.Different length with the pre-pits 1104 of being arranged to interleaving mode and space 1105 defines three different codes.For example, as shown in Figure 9, length is the space 1105 expression codes " 0 " of 8Tw, and length is the space 1105 expression codes " 1 " of 12Tw, and length is the space 1105 expression codes " S " of 16Tw.Perhaps, the length with pre-pits 1104 replaces space 1105 to define code.For example, length is the pre-pits 1104 expression codes " 0 " of 20Tw, and length is the pre-pits 1104 expression codes " 1 " of 16Tw, and length is the pre-pits 1104 expression codes " S " of 12Tw.At this moment, represent code " 0 ", " 1 " and " S " by the order that rises with the length in space 1105.Perhaps, represent code " 0 ", " 1 " and " S " by the order that descends with the length in space 1105.
Code " S " expression comprises the stem of the block address of one group of sector.Therefore, represent that first and second identifiers 1108 of code " S " and 1109 reliability can be compared to first and second identifiers 1108 of other code of expression and 1109 reliability height most.Under the situation of DVD, 8 * 16 modulator approaches of utilizing the maximum of record data wherein to operate to 14Tw are recorded in data in record and the recapiulation 112.Therefore, if represent code " S " with the 12Tw that in 8 * 16 modulator approaches, does not use, 16Tw or 20Tw, then can detect first and second identifiers 1108 and 1109 that are recorded in the identifying information portion 111 more reliably.
As mentioned above, with being arranged to the pre-pits 1104 of interleaving mode and the different length in space 1105 comes definition record first and second identifiers 1108 and 1109, three different codes in identifying information portion 111.In addition, address information is distributed to and is recorded in a plurality of identifying information portion 111.Therefore, the size of title portion is compared with the title portion of 128 bytes of routine and is reduced to 4 bytes.Like this, form dish of the present invention has the remaining title of minimizing portion, thereby has rolled up the recording capacity of dish.
In the present invention, address information is by comprising that three codes such as code " 0 ", " 1 " and code " S " constitute.Use code " S " can clearly represent the starting position of the address of one group of sector, thereby improve the reliability that reads address information.
Below, detection method is described.When using (signal from independent photodetector obtains by adding) additive signal to carry out reproduction, obtain reproduction waveform 901 shown in Figure 9.First rising edge (starting point) of supposing waveform 901 is time t1, and then measurement time t 1 is to corresponding to coming detection of code during time t2, the t3 of next negative edge or the t4.As shown in Figure 9, when detected time width was 8Tw, code was " 0 "; When detected time width was 12Tw, code was " 1 "; When detected time width was 16Tw, code was " S ".
When using (by from subtraction obtains along carrying out between the signal of the independent photodetector of tracking direction setting) cut signal to carry out reproduction, obtain reproduction waveform 902 shown in Figure 9.First negative edge (starting point) of supposing waveform 902 is time t2, t3 or t4, and then measurement time t 2, t3 or t4 are to corresponding to coming detection of code during the time t8 of next rising edge.As shown in Figure 9, when detected time width was 20Tw, code was " 0 "; When detected time width was 16Tw, code was " 1 "; When detected time width was 12Tw, code was " S ".
Under the situation of subtraction signal, because pre-pits is aligned to interleaving mode, so for 0 grade, be symmetrical in reproduction waveform 902 corresponding to second identifier 1109 corresponding to the reproduction waveform 902 of first identifier 1108.In first identifier 1108, the starting point of reproducing waveform is negative edge.On the contrary, in second identifier 1109, the starting point of reproducing waveform is rising edge.
Embodiment 7
Below, with reference to Figure 10 embodiments of the invention 7 are described.Figure 10 is that expression is according to the figure of the compact disk structure of the embodiment of the invention 7.In Figure 10, use with Fig. 1 in the identical part of track 100 on identical symbolic representation and the above-mentioned CD that is positioned at Fig. 1.Therefore omit the detailed description of these parts.
With reference to Figure 10, ridge sector 109A comprises identifying information portion 111 and record and recapiulation 112.Groove sector 110A comprises identifying information portion 111 and record and recapiulation 112.
The center line C1 that first identifier 1208 is arranged in corresponding to the groove track 101 of the identifying information portion 111 of each groove sector 110A is partial on the position of inner periphery.The center line C2 that second identifier 1209 is arranged in corresponding to the ridge track 102 of the identifying information portion 111 of each ridge sector 109A is partial on the position of inner periphery.
As shown in figure 10, first identifier 1208 is arranged in the first half of identifying information portion 111, and second identifier 1209 is arranged in the second half of identifying information portion 111.As shown in figure 10, first and second identifiers 1208 and 1209 have pre-pits and the space that is arranged in interleaving mode.Record data in ridge track 102 and groove track 101.
Record and recapiulation 112 are present in a plurality of sectors, and identifying information portion 111 is between each record and recapiulation 112.Address information is assigned to the sector location group that comprises a plurality of ridges sector or a plurality of grooves sector.The information of a position of prior recording address information in first and second identifiers 1208 and 1209.The address information of representing the sector with the combination of first and second identifiers 1208 of a plurality of contiguous sectors and 1209.
The part (position) of the address information of ridge sector is distributed to first identifier 1208, and the part (position) of the address information of groove sector is distributed to second identifier 1209.Perhaps, the part (position) of the address information of ridge sector is distributed to second identifier 1209, and the part (position) of the address information of groove sector is distributed to first identifier 1208.
The physical arrangement of first and second identifiers 1208 and 1209 is described.In Figure 10, first and second identifiers 1208 and 1209 comprise that the center line C2 corresponding to the center line C1 of groove track 101 and ridge track 102 is arranged to pre-pits 1204 and the space 1205 of interleaving mode.In first and second identifiers 1208 and 1209, the length of each pre-pits 1204 depends on the code of the expression of being represented by this pre-pits.As shown in figure 10, the initial line that rises of each pre-pits 1204 in first identifier 1208 is positioned on the same straight line substantially.Equally, the initial line that rises of each pre-pits 1204 in second identifier 1209 is positioned on the same straight line substantially.
Coding is described below.Different length with the pre-pits 1204 of being arranged to interleaving mode and space 1205 defines three different codes.For example, as shown in figure 10, length is the pre-pits 1204 expression codes " 0 " of 12Tw, and length is the pre-pits 1204 expression codes " 1 " of 16Tw, and length is the pre-pits 1204 expression codes " S " of 20Tw.Perhaps, the different length with space 1205 replaces pre-pits 1204 to define code.For example, length is the space 1205 expression codes " 0 " of 20Tw, and length is the space 1205 expression codes " 1 " of 16Tw, and length is the space 1205 expression codes " S " of 12Tw.At this moment, represent code " 0 ", " 1 " and " S " by the order that rises with the length of pre-pits 1204.Perhaps, represent code " 0 ", " 1 " and " S " by the order that descends with the length of pre-pits 1204.
Code " S " expression comprises the stem of the block address of one group of sector.Therefore, represent that first and second identifiers 1208 of code " S " and 1209 reliability can be compared to first and second identifiers 1208 of other code of expression and 1209 reliability height most.Under the situation of DVD, 8 * 16 modulator approaches of utilizing the maximum of record data wherein to operate to 14Tw are recorded in data in record and the recapiulation 112.Therefore, if represent code " S " with the 12Tw that in 8 * 16 modulator approaches, does not use, 16Tw or 20Tw, then can detect first and second identifiers 1208 and 1209 that are recorded in the identifying information portion 111 more reliably.
As mentioned above, with being arranged to the pre-pits 1204 of interleaving mode and the different length in space 1205 comes definition record first and second identifiers 1208 and 1209, three different codes in identifying information portion 111.In addition, address information is distributed to and is recorded in a plurality of identifying information portion 111.Therefore, the size of title portion is compared with the title portion of 128 bytes of routine and is reduced to 4 bytes.Like this, form dish of the present invention has the remaining title of minimizing portion, thereby has rolled up the recording capacity of dish.
In the present invention, address information is by comprising that three codes such as code " 0 ", " 1 " and code " S " constitute.Use code " S " can clearly represent the starting position of the address of one group of sector, thereby improve the reliability that reads address information.
Below, detection method is described.When using (signal from independent photodetector obtains by adding) additive signal to carry out reproduction, obtain reproduction waveform 1001 shown in Figure 10.First negative edge (starting point) of supposing waveform 1001 is time t11, and then measurement time t 11 is to corresponding to coming detection of code during time t12, the t13 of next negative edge or the t14.As shown in figure 10, when detected time width was 12Tw, code was " 0 "; When detected time width was 16Tw, code was " 1 "; When detected time width was 20Tw, code was " S ".
When using (by from subtraction obtains along carrying out between the signal of the independent photodetector of tracking direction setting) cut signal to carry out reproduction, obtain reproduction waveform 1002 shown in Figure 10.First negative edge (starting point) of supposing waveform 1002 is time t11, and then measurement time t 11 is to corresponding to coming detection of code during time t12, the t13 of next negative edge or the t14.As shown in figure 10, when detected time width was 12Tw, code was " 0 "; When detected time width was 16Tw, code was " 1 "; When detected time width was 20Tw, code was " S ".
Under the situation of subtraction signal, because pre-pits is aligned to interleaving mode, so for 0 grade, be symmetrical in reproduction waveform 1002 corresponding to second identifier 1209 corresponding to the reproduction waveform 1002 of first identifier 1208.In first identifier 1208, the starting point of reproducing waveform is negative edge.On the contrary, in second identifier 1209, the starting point of reproducing waveform is rising edge.
Below, with reference to Figure 11 A and 11B embodiments of the invention 8 are described.Figure 11 A and 11B are that expression is according to the figure of the CD of the embodiment of the invention 8.With with Fig. 1 in the identical part of track 100 on identical symbolic representation and the above-mentioned CD that is positioned at Fig. 1.Therefore omit the detailed description of these parts.
Figure 11 A represents to be recorded in the address information structure of the user data cell in record and the recapiulation 112, and the unit is of a size of 2KB.Address information be assigned to and be recorded in a plurality of sector 109A, 109B, 109C ..., among the 109D.With a position information in the address information be assigned to each sector 109A, 109B, 109C ..., the 109D stem identifying information portion 111.The unit of address information is address block 108.Address block 108 is for example corresponding to the ECC module unit.
Under the situation of Figure 11 A, an ECC module unit comprises 32 sectors, and has 2KB * 32 (=64KB) user record capacity.The user data of every 64KB is specified a continuation address number.Each 64KB then increases address number, and address number is assigned to address block from the inner circumferential side to the outer circumferential sides.
Figure 11 B is the figure that the address information content is described.The situation that has the single information sides (single layer) of recorded information on it when CD is described.Address number is made of 32 address bits in 32 sectors that are recorded in an ECC module unit respectively.Shown in Figure 11 B, the stem of address block comprises the cognizance code " S " that the expression address number begins.19 of back are information bits of expression actual address number.12 of the back is the parity check bit of address number.(2 19 powers) * 64KB can be provided (=32GB) address space like this.
Below, the CD that the information with two recorded informations on it is represented (two layers) is described.Address number is made of 32 address bits in 32 sectors that are recorded in respectively on the ECC piece.Continuous address number is assigned to the address block of first recording layer from the inner circumferential side to the outer circumferential sides of two-layer dish.Equally, continuous address number is assigned to the address block of second recording layer from the inner circumferential side to the outer circumferential sides of two-layer dish.At this moment, the start address of the second layer number is the FA final address number continuous a string number of beginning from ground floor.Perhaps, from count the again address number of the second layer of inner circumferential side.
Shown in Figure 11 B, the stem of address block comprises the cognizance code " S " that the expression address number begins.Subsequently 20 are information bits of expression actual address number.10 of the back is the parity check bit of address number.A remaining position is the level number of expression recording layer number.(2 20 powers) * 64KB can be provided (=64GB) address space like this.
In addition, can obtain following effect by comprising level number in the address information.Use level number can determine the recording layer of focal beam spot on it in real time.Can determine which recording layer hot spot focuses on by reading level number in the time of reading address number (every 64KB).Therefore, accidental jump or the undesired focusing that can detect rapidly from a layer to another layer are jumped into, thereby can carry out immediate addressing in this case.
In addition, under the situation of two-layer dish, can between first and second layers, change pre-pits as shown in Fig. 9 and 10 of embodiment 6 and 7 or the length in space.For example, ground floor has compact disk structure shown in Figure 9, and (that is, the pre-pits length corresponding to code " 0 " is 22Tw and the second layer has the pre-pits that each length lengthens 2Tw, pre-pits length corresponding to code " 1 " is 18Tw, is 14Tw corresponding to the pre-pits length of code " S ").At this moment, have different width detection time corresponding to the pre-pits in first and second layers of same code, thereby prevent the error-detecting recording layer.
All types of codes can not have different width detection time in first and second layers.Pre-pits or the space of only representing code " S " have different length between first and second layers.The pattern of only representing code " S " is different in first and second layers.
With reference to Figure 12, for example, the pattern of expression code " S " is different between first and second layers.Code " S " is code " S1 " in ground floor, and code " S " is code " S2 " in the second layer.As shown in figure 12, represent code " S1 " with the pattern that comprises pre-pits 305A and be arranged on the space 306 after the pre-pits 305A.The length of pre-pits 305A is P1.Length P1 is 12 times of detection window width Tw.The length in space 306 is S1.Length S1 is 4 times of detection window width Tw.Represent code " S2 " with comprising space 306 and the pattern that is arranged on space 306 pre-pits 305A afterwards.The length in space 306 is S1.Length S1 is 4 times of detection window width Tw.The length of pre-pits 305A is P1.Length P1 is 12 times of detection window width Tw.Code " S1 " is recorded in the ground floor, and code " S2 " is recorded in the second layer.
When the different mode between in a manner described with first and second layers is represented code " S ", identification record layer fast during the cognizance code in reading the address block stem " S ".Therefore, accidental jump or the undesired focusing that can detect rapidly from a layer to another layer are jumped into, thereby can carry out immediate addressing in this case.
Industrial application
As mentioned above, use a space that has two pre-pits (or mark) of length P1 and P2 respectively and have length S1 to represent cognizance code.Like this, compare with 128 bytes of conventional title portion, the size of title portion can reduce to 4 bytes.Therefore, form dish of the present invention has the remaining title of minimizing portion, thereby has rolled up the recording capacity of dish.
In addition, according to optical recording media of the present invention, address information is made of these three codes of code " 0 ", " 1 " and code " S ".Use code " S " can clearly identify the starting position of the address of one group of sector, thereby improve the reliability that reads address information.
Claims (3)
1. the method at the enterprising line item of optical recording media comprises the steps:
Form a plurality of identifiers relevant with address information, wherein each identifier comprises at least one in first pattern, second pattern and the three-mode;
Form this first pattern at described optical recording media, this first pattern representative is by the first code of a bit representation, and this first code is " 0 ";
Form this second pattern at described optical recording media, this second pattern representative is by the second code of a bit representation, and this second code is " 1 "; With
Form this three-mode at described optical recording media, this three-mode representative is by the third generation sign indicating number of a bit representation, and this third generation sign indicating number is " S " of expression sync mark;
Wherein said optical recording media comprises a plurality of address blocks, and each address block in these a plurality of address blocks has a plurality of unit, and each unit in these a plurality of unit has identifying information portion,
In wherein said a plurality of identifier each is arranged in the described identifying information portion of described each unit; And
Wherein said address information is to be represented by described first pattern of the back that is arranged on described three-mode and the combination of second pattern.
2. according to the described method of claim 1, comprising:
According to by the indicated described address information recording information of the described a plurality of identifiers that form in the described optical recording media.
3. a reproduction comprises according to the method for the information of claim 1 record:
Reproduce described address information by reading in the described identifier that forms in the described optical recording media.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14494/2000 | 2000-01-24 | ||
| JP2000014494 | 2000-01-24 | ||
| JP308754/2000 | 2000-10-10 | ||
| JP2000308754 | 2000-10-10 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018040772A Division CN100405494C (en) | 2000-01-24 | 2001-01-23 | Optical recording medium, optical reproduction apparatus, and optical reproduction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101325064A CN101325064A (en) | 2008-12-17 |
| CN101325064B true CN101325064B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810110382 Expired - Fee Related CN101325064B (en) | 2000-01-24 | 2001-01-23 | Optical recording medium, optical reproduction apparatus, and optical reproduction method |
| CN2008101103902A Expired - Lifetime CN101325065B (en) | 2000-01-24 | 2001-01-23 | Method for manufacturing optical recording medium, recording method and reproducing method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101103902A Expired - Lifetime CN101325065B (en) | 2000-01-24 | 2001-01-23 | Method for manufacturing optical recording medium, recording method and reproducing method |
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| CN (2) | CN101325064B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5872767A (en) * | 1995-02-17 | 1999-02-16 | Matsushita Electric Industrial Co., Ltd. | Optical disk and an optical disk recording/reproduction device having address blocks located on boundary lines between adjoining tracks |
| US5835478A (en) * | 1995-06-15 | 1998-11-10 | Sony Corporation | Optical disc having address information for recording and reproducing data at correct positions |
| DE69834072T2 (en) * | 1997-06-16 | 2007-02-08 | Kabushiki Kaisha Toshiba | An optical disk for recording / reproducing with zigzag shifted headfields, and a recording / reproducing apparatus for using the same |
-
2001
- 2001-01-23 CN CN 200810110382 patent/CN101325064B/en not_active Expired - Fee Related
- 2001-01-23 CN CN2008101103902A patent/CN101325065B/en not_active Expired - Lifetime
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| CN101325065B (en) | 2011-03-23 |
| CN101325064A (en) | 2008-12-17 |
| CN101325065A (en) | 2008-12-17 |
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