CN101038777A - Radial position location for non-data surface of CD disc - Google Patents
Radial position location for non-data surface of CD disc Download PDFInfo
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- CN101038777A CN101038777A CN 200610071815 CN200610071815A CN101038777A CN 101038777 A CN101038777 A CN 101038777A CN 200610071815 CN200610071815 CN 200610071815 CN 200610071815 A CN200610071815 A CN 200610071815A CN 101038777 A CN101038777 A CN 101038777A
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Abstract
The invention provides an optical disk having a mark reference pattern at a non-data face of ifself. When the optical disk according to the invention is put into an optical information recording device, an optical reading unit of the optical information recording device is able to be positioned in at least a reference radial position on the non-data face of the optical disk by the reference pattern. The at least a reference radial position is used for helping the optical reading unit to record a volume label on the non-data face of the optical disk.
Description
Technical field
The invention relates to the discs (Optical disc) that has mark reference pattern (Reference patterns) on a kind of non-data side (Non-data side) at itself, and the invention relates to especially, by the method for these reference patterns by optical pick-up unit (Optical pick-up unit) location (Register) at least one reference radial position (Referenceradial position) on the non-data side of this discs of optical information recording device (Optical informationrecording apparatus).
Background technology
Along with recordable discs (Recordable optical disc) and re-writeable discs (Rewritable optical disc) are used to storage data widely, thing followed problem promptly is how to do management at the discs of storage data.
Along with the consumer expects to have mode more easily, they have write the data of recording on the extremely discs that is had themselves to come identification, and the method that reaches mark (Labeling) with for example literal (Text) and image forms such as (Figure) on the non-data side of these discs develops constantly.The basic skills of mark discs with nonvolatil mark utensil (Maker) (for example comprises, sharp-pointed pen at quarter (Sharpie maker)) writes in discs entity and write on the non-data side of record, or print and paste formula label paper (Papersticker label) and it is attached on the non-data side of discs.Other comprises inkjet printing (Ink jet), thermal wax transfer (Thermal waxtransfer) and thermal dye transfer (Thermal dye transfer) at the entity mask method of carrying out in the conventional optical disc player ... etc. method.Also there is other in traditional CD player, to use laser, comes the discs of special preparation is done the method for mark.Above-mentioned the whole bag of tricks similarly is applicable on the various discs such as CD-R, CD+R, CD-RW, DVD-R, DVD+R, DVD-RW....
Follow the subject matter of mark discs, be on label surface (Label surface) (just so-called non-data side or end face), do not have the mark (Marking) of track (Track) or other pattern to assist to determine radial location.Therefore, for example, increase mark to the beginning Print Label or to the label of previous formation, the radial location of its needed laser spots may cause the misuse label.For instance, if label printing just might overlap with self in the radius of too close discs inner ring diameter.Similarly, if label printing too away from the radius of discs inner ring diameter, gap (Gap) just might appear in label.
Therefore, need be in order to go up the existence of the method for decision radial location on the surface (for example, the non-data side of discs or label face) of no track or other mark of discs.The non-data side (or label face) that No. 10/347974 application case of Application No. promptly discloses in discs stamps reference patterns such as serrate or triangle in advance, and utilizes reference pattern that location positioning so-called absolute radial location (Absolute radial position) on the non-data side of discs of laser is located.Yet, it is to be applicable to rectangular coordinate (that is to say and be incident upon the plane that X-axle and Y-axle are constituted) that above-mentioned prior art reckons without its pattern that adopts, these design being applicable to polar coordinates (that is to say and be incident upon r-axle and plane that θ-axle constituted), can be caused the distortion (Distortion) of pattern.Prior art is labeled in distortion pattern on the discs by these, location positioning so-called absolute radial location on the non-data side of discs with laser, distance between the center of circle of itself and discs can be come shortly than the distance between the center of circle of the absolute radial location of reality and discs.Above-mentioned error is as if the radius that occurs in away from the discs inner ring diameter, and error is big more.
Therefore, one object of the present invention aims to provide the discs that has the mark reference pattern on a kind of non-data side at itself (or label face), and especially, these reference patterns are the pattern of non-distortion.
Therefore, another object of the present invention is to provide a kind of method that is positioned last at least one reference radial position of non-data side (or label face) of this discs by the reference pattern of these non-distortions by the optical pick-up unit of optical information recording device.
Summary of the invention
Discs according to first preferred embodiment of the present invention comprises data surface and non-data side.The structure of this data surface is to cooperate storage data.The structure of this non-data side is to accept form labels such as literal and image.N pattern that repeats is that wherein N is a natural number in the annular region that is placed on the non-data side of this discs.Each pattern be by one other and have first mark of first reflectivity and other and second mark with second reflectivity are constituted.This annular region is determined by first radius (R1) and greater than second radius (R2) of this first radius.Each first mark is contained other first arc (A1) being determined of radius (r) by change, and each second mark is contained other second arc (A2) that the radius (r) by this change is determined.The radius of this change (r) is in the scope that is limited to from this first radius (R1) to this second radius (R2).
Utilization at first, along with this discs is rotated, will be pointed to by the laser spots that this optical pick-up unit sends on these patterns according to the rapid flow process of the localization method of the discs of first preferred embodiment of the present invention.Then, along with these patterns pass through this laser spots, sensing reflected light.Then, convert this reflected light to reflectivity signals.Then, monitor the work period ratio of this reflectivity signals.Then, according to the work period ratio of this reflectivity signals and the comparison between first predetermined value, optionally move this laser spots along first radial direction or along second radial direction opposite with this first radial direction.At last, this optical pick-up unit is positioned the first reference radial position place at least one reference radial position.In this first reference radial position place, the work period ratio of this reflectivity signals is to equal this first predetermined value.This localization method is further carried out, and along this second radial direction, moves this laser spots.Then, this optical pick-up unit is positioned the second reference radial position place in this at least one reference radial position.In this second reference radial position place, the work period ratio of this reflectivity signals is to equal second predetermined value.This localization method is further carried out, and along this first radial direction, moves this laser spots.Then, this optical pick-up unit is positioned the 3rd reference radial position place in this at least one reference radial position.In the 3rd reference radial position place, the work period ratio of this reflectivity signals is to equal the 3rd predetermined value.
Discs according to second preferred embodiment of the present invention comprises data surface and non-data side.The structure of this data surface is to cooperate storage data.The structure of this non-data side is to accept form labels such as literal and image.N first pattern that repeats is that wherein N is a natural number in first annular region that is placed on the non-data side of this discs.Each first pattern be by one other and have first mark of first reflectivity and other and second mark with second reflectivity are constituted.This first annular region is determined by first radius (R1) and greater than second radius (R2) of this first radius.Each first mark is contained other first arc (A1) that is determined by first radius (r1) that changes, and each second mark is contained other second arc (A2) that is determined by this first radius (r1) that changes.The radius (r1) of this first change is in the scope that is limited to from this first radius (R1) to this second radius (R2).M second pattern that repeats is that wherein M is a natural number in second annular region that is placed on the non-data side of this discs.Each second pattern be by one other and have the 3rd mark of the 3rd reflectivity and other and the 4th mark with the 4th reflectivity are constituted.This second annular region is determined by this second radius (R2) and greater than the 3rd radius (R3) of this second radius.Each the 3rd mark is contained other the 3rd arc (A3) that is determined by second radius (r2) that changes, and each the 4th mark is contained other the 4th arc (A4) that is determined by this second radius (r2) that changes.The radius (r2) of this second change is to be limited to from this second radius (R2) to the scope of the 3rd radius (R3).
Utilization at first, along with this discs is rotated, will be pointed to by the laser spots that this optical pick-up unit sends on these first patterns or these second patterns according to the rapid flow process of the localization method of the discs of second preferred embodiment of the present invention.Then, along with these first patterns or these second patterns pass through this laser spots, sensing reflected light.Then, convert this reflected light to reflectivity signals.Then, monitor the work period ratio of this reflectivity signals.Then, reflect the change of the work period of letter rate signal, optionally move this laser spots along first radial direction or along second radial direction opposite with this first radial direction according to this.At last, this optical pick-up unit is positioned the first reference radial position place in this at least one reference radial position.In this first reference radial position place, the work period ratio of this reflectivity signals is to equal first predetermined value.This localization method is further carried out, and along this second radial direction, moves this laser spots.Then, this optical pick-up unit is positioned the second reference radial position place in this at least one reference radial position.In this second reference radial position place, the work period ratio of this reflectivity signals is to equal second predetermined value.This localization method is further carried out, and along this first radial direction, moves this laser spots.Then, this optical pick-up unit is positioned the 3rd reference radial position place in this at least one reference radial position.In the 3rd reference radial position place, the work period ratio of this reflectivity signals is to equal this second predetermined value.
Can describe in detail and appended graphic being further understood the present invention by following embodiment about the advantages and spirit of the present invention.
Description of drawings
Figure 1A is the side view of discs 1, and this discs 1 comprises data surface 12 and non-data side 14.
Figure 1B is a case that illustrates on the non-data side 14 that first preferred embodiment according to the present invention is implemented on the discs 1 among Figure 1A, Figure 1B and illustrate the pattern 142 that is marked on this non-data side 14 and is placed in the inner ring radius of this discs 1.
Fig. 1 C is another case that illustrates on the non-data side 14 that first preferred embodiment according to the present invention is implemented on the discs 1 among Figure 1A, Fig. 1 C and illustrate the pattern 142 that is marked on this non-data side 14 and is placed in the outmost turns radius of this discs 1.
Fig. 2 A is the process flow diagram of utilization according to the localization method 2 of the discs 1 of first preferred embodiment of the present invention.
Fig. 2 B is on the pattern 142 that schematically illustrates on the discs 1 that laser spots 22 is pointed among Figure 1B or Fig. 1 C, and then the sensing reflected light, and converts this reflected light to reflectivity signals 24.
Fig. 3 A illustrates the case that second preferred embodiment according to the present invention is implemented on the non-data side 14 of the discs 1 among Figure 1A, Fig. 3 A and illustrate the pattern (342,346) that is marked on this non-data side 14 and is placed in the inner ring radius of this discs 1.
Fig. 3 B is another case that illustrates on the non-data side 14 that second preferred embodiment according to the present invention is implemented on the discs 1 among Figure 1A, Fig. 3 B and illustrate the pattern (342,346) that is marked on this non-data side 14 and is placed in the outmost turns radius of this discs 1.
Fig. 4 A is the process flow diagram of utilization according to the localization method 4 of the discs 1 of second preferred embodiment of the present invention.
Fig. 4 B is on the pattern (342,346) that schematically illustrates on the discs 1 that laser spots 42 is pointed among Fig. 3 A or Fig. 3 B, and then the sensing reflected light, and converts this reflected light to reflectivity signals 44.
[main element label declaration]
1: discs 12: data surface
14: non-data side 142: pattern
142a: the first mark 142b: second mark
144: annular region R1: first radius
R2: 3: the three radiuses of second radius R
R4: the 4th radius θ: central angle
22,42: laser spots 24,44: reflectivity signals
C, C1, C2: 1: the first arc of curve A
A2: the second arc A3: the 3rd arc
A4: the 4th arc r: the radius of change
R1: the radius of the radius r of first change change in 2: the second
2,4: localization method S20～S29: process step
242,442: the recurrence interval
244,444: the burst length holds time
342: the first pattern 342a: first mark
342b: 344: the first annular regions of second mark
346: the second pattern 346a: the 3rd mark
346b: 348: the second annular regions of the 4th mark
2: the second central angles of 1: the first central angle θ of θ
S40～S49: process step
Embodiment
The present invention provides the discs that has the mark reference pattern on a kind of non-data side at itself (or label face), and especially, these reference patterns are the pattern of non-distortion.The present invention and the non-data side (or label face) that provides a kind of reference pattern by these non-distortions to be positioned this discs by the optical pick-up unit of optical information recording device go up the localization method of at least one reference radial position.Several preferred embodiment according to the present invention are that exposure is as follows.
Seeing also Figure 1A to Fig. 1 C, is to be depicted among the figure according to the discs 1 of first preferred embodiment of the present invention.
Shown in Figure 1A, this discs 1 comprises data surface 12 and non-data side 14.The structure of this data surface 12 is to cooperate storage data.The structure of this non-data side 14 is to accept form labels such as literal and image.
Shown in Figure 1B, N pattern 142 that repeats is that wherein N is a natural number in the annular region (Annular region) 144 that is placed on the non-data side 14 of this discs 1.Each pattern 142 be by one other and have first mark (Mark) 142a of first reflectivity (Reflectivity) and other and second a mark 142b with second reflectivity are constituted.This annular region 144 is determined by first radius (R1) and greater than second radius (R2) of this first radius.Each first mark 142a is contained other first arc (A1) being determined of radius (r) by change, and each second mark 142b is contained other second arc (A2) that the radius (r) by this change is determined.The radius of this change (r) is in the scope that is limited to from this first radius (R1) to this second radius (R2).What need emphasize is, the decision of this first arc (A1) promptly is the camber line that the circle that constituted of the radius (r) by this change and each first mark 142a intersect, and the decision of this second arc (A2) promptly is the circle and the crossing camber line of each second mark 142b that the radius (r) by this change is constituted.
In a specific embodiment, this first reflectivity is to be higher than this second reflectivity, shown in Figure 1B.And, in same pattern 142, the folded curve (C) of the first mark 142a and the second mark 142b is through calculated in advance, cause, the ratio between the arc length of second arc (A2) of the second mark 142b of the arc length of first arc (A1) of each first mark 142a and this first mark of next-door neighbour 142a is to be proportional to (r-R1)/(R2-R1).In another specific embodiment, this first reflectivity is to be lower than this second reflectivity.And, in same pattern 142, the folded curve (C) of the first mark 142a and the second mark 142b is through calculated in advance, cause, the ratio between the arc length of second arc (A2) of the second mark 142b of the arc length of first arc (A1) of each first mark 142a and this first mark of next-door neighbour 142a is inversely proportional to (r-R1)/(R2-R1).
Be shown in Figure 1B equally, these patterns 142 are to be used for assisting orienting interior surrounding edge circle that can write down label on the non-data side 14 of this discs 1.That is to say that this first radius (R1) is the inner ring radius (Extreme inner radius) that equals this discs 1 substantially.
Shown in Fig. 1 C, these patterns 142 also can be used for assisting to orient the outermost border that can write down label on the non-data side 14 of this discs 1.That is to say that this second radius (R2) is the outmost turns radius (Extreme outer radius) that equals this discs 1 substantially.Have unit, pattern or geometric position with Figure 1B duplicate numbers mark in Fig. 1 C, it defines with above unit, pattern or the geometric position to each mark among Figure 1B is identical, does not do at this and gives unnecessary details.What need emphasize is, in Fig. 1 C, the ratio between the arc length of second arc (A2) of the second mark 142b of the arc length of first arc (A1) of each first mark 142a and this first mark of next-door neighbour 142a is still followed direct ratio or is inversely proportional to the standard of (r-R1)/(R2-R1).Therefore, these patterns 142 can be along with the change that is arranged on radial position on this discs 1 (position in inner ring radius or position at the outmost turns radius), and causes the distortion of pattern itself.
In a specific embodiment, each pattern 142 is other ring scallop (Annularsector pattern).Each ring scallop 142 is by (Central angle θ) determines, and N is the integer that equals 2 π/θ, shown in Figure 1B and Fig. 1 C about the central angle of this discs 1.
See also Fig. 2 A and Fig. 2 B, these graphic announcement utilizations are according to the steps flow chart of the localization method 2 of the discs 1 of first preferred embodiment of the present invention.This localization method 2 is to allow the optical pick-up unit (not being illustrated among the figure) of optical information recording device (not being illustrated among the figure) be positioned at least one reference radial position on non-data side (or label face) 14 of this discs 1.
Shown in Fig. 2 A and Fig. 2 B, this localization method 2 is execution in step S20 at first, along with this discs 1 is rotated, will point to by the laser spots (Laser spot) 22 that this optical pick-up unit sends on these patterns 142 according to first preferred embodiment of the present invention.
Follow execution in step S21, along with these patterns 142 pass through this laser spots 22, sensing reflected light (Reflected light).
Then execution in step S22 converts this reflected light to reflectivity signals (Reflectivitysignal) 24, shown in Fig. 2 B.
Then execution in step S23, the work period of monitoring this reflectivity signals 24 that is to say than (Duty ratio), the hold time ratio of (Pulse duration) 244 and recurrence interval (Pulse period) 242 of the burst length of monitoring shown in Fig. 2 B.
Note, based in same pattern 142, the folded curve (C) of the first mark 142a and the second mark 142b is through calculated in advance, cause, the work period of this reflectivity signals 24 is than being the ratio that equals the change between the arc length of second arc (A2) of the second mark 142b of the arc length of first arc (A1) of each first mark 142a and next-door neighbour this first mark 142a.
After step S23, follow execution in step S24,, optionally move this laser spots 22 along first radial direction or along second radial direction with this first radial direction according to the work period ratio of this reflectivity signals 24 and the comparison between first predetermined value.
In a specific embodiment, the ratio of this change system is proportional to (r-R1)/(R2-R1).In this case, in step S24, if the work period of this reflectivity signals ratio then moves this laser spots 22 along this first radial direction less than this first predetermined value; If the work period of this reflectivity signals is then moved this laser spots 22 along this second radial direction than greater than this first predetermined value.In another specific embodiment, the ratio of this change is inversely proportional to (r-R1)/(R2-R1).In this case, in step S24, if the work period of this reflectivity signals ratio then moves this laser spots 22 along this first radial direction greater than this first predetermined value; If the work period of this reflectivity signals is then moved this laser spots 22 along this second radial direction than less than this first predetermined value.
Last execution in step S25 is positioned this optical pick-up unit for the first reference radial position place in this at least one reference radial position.In this first reference radial position place, the work period ratio of this reflectivity signals 24 is to equal this first predetermined value.
In practical application, above-mentioned this first reference radial position promptly can be stipulating of interior surrounding edge circle that can write down label on the non-data side 14 of this discs 1, and this moment, and this first radius (R1) is the inner ring radius that equals this discs 1 substantially.Similarly, above-mentioned this first reference radial position promptly can be stipulating of the outermost border that can write down label on the non-data side 14 of this discs 1, and this moment, and this second radius (R2) is the outmost turns radius that equals this discs 1 substantially.
In addition, form a plurality of points (Dots) with laser beam in the non-data side of discs and on the non-data side of discs, form the technology of these a plurality of points to constitute the prior art of label, to have developed by radially swinging laser beam.Above-mentioned ins and outs please refer to No. 10/447736 application case of Application No., do not do at this and give unnecessary details.
Yet, use laser beam forms these a plurality of points on the non-data side of discs the technology of radially swinging, except the benchmark radial position, need orient other radial reference position, in order to controlling the amplitude that laser beam is left towards the discs inner ring diameter accurately, and towards the close amplitude of discs inner ring diameter.
Therefore, be shown in the A as Fig. 2 equally, in a specific embodiment, this localization method 2 further execution in step S26 along this second radial direction, move this laser spots 22.Then execution in step S27 is positioned this optical pick-up unit for the second reference radial position place in this at least one reference radial position.In this second reference radial position place, the work period ratio of this reflectivity signals 24 is to equal second predetermined value.
In addition, be shown in the A as Fig. 2 equally, in a specific embodiment, this localization method 2 further execution in step S28 along this first radial direction, move this laser spots 22.Then execution in step S29 is positioned this optical pick-up unit for the 3rd reference radial position place in this at least one reference radial position.In the 3rd reference radial position place, the work period ratio of this reflectivity signals 24 is to equal the 3rd predetermined value.
In a specific embodiment, this first predetermined value is to equal 50%, and this second predetermined value is to equal 25%, and the 3rd predetermined value is to equal 75%.Logical in this specific embodiment, according to first reference radial position that this first predetermined value is determined, be can write down interior surrounding edge circle of label or stipulating of outermost border on the non-data side 14 as this discs 1.According to second reference radial position that this second predetermined value is determined, be stipulating of the amplitude that leaves towards the discs inner ring diameter as the control laser beam.According to the 3rd reference radial position that the 3rd predetermined value is determined, be as control laser beam stipulating towards the close amplitude of discs inner ring diameter.
Seeing also Fig. 3 A and Fig. 3 B, is to be depicted among the figure according to the discs 1 of second preferred embodiment of the present invention.
Second preferred embodiment of the present invention and above-mentioned preferred embodiment difference as shown in Figure 3A, are to settle N first pattern 342 that repeats in first annular region 344 on the non-data side 14 of this discs 1, and wherein N is a natural number.Each first pattern 342 be by one other and have the first mark 342a of first reflectivity and other and second a mark 342b with second reflectivity are constituted.This first annular region 344 is determined by first radius (R1) and greater than second radius (R2) of this first radius.Each first mark 342a is contained other first arc (A1) that is determined by first radius (r1) that changes, and each second mark 342b is contained other second arc (A2) that is determined by this first radius (r1) that changes.The radius (r1) of this first change is in the scope that is limited to from this first radius (R1) to this second radius (R2).
Be shown in Fig. 3 A equally, be second pattern 346 of settling M repetition in second annular region 348 on the non-data side 14 of this discs 1 in, wherein M is a natural number.Each second pattern 346 be by one other and have the 3rd mark 346a of the 3rd reflectivity and other and the 4th a mark 346b with the 4th reflectivity are constituted.This second annular region 348 is determined by this second radius (R2) and greater than the 3rd radius (R3) of this second radius.Each the 3rd mark 346a is contained other the 3rd arc (A3) that is determined by second radius (r2) that changes, and each the 4th mark 346b is contained other the 4th arc (A4) that is determined by this second radius (r2) that changes.The radius (r2) of this second change is to be limited to from this second radius (R2) to the scope of the 3rd radius (R3).
In a specific embodiment, this first reflectivity is to be higher than this second reflectivity, and the 3rd reflectivity is to be lower than the 4th reflectivity, as shown in Figure 3A.And, in same first pattern 342, the folded curve (C1) of the first mark 342a and the second mark 342b is through calculated in advance, cause, first ratio between the arc length of second arc (A2) of the second mark 342b of the arc length of first arc (A1) of each first mark 342a and this first mark of next-door neighbour 342a is to be proportional to (r1-R1)/(R2-R1).In same second pattern 346, the folded curve (C2) of the 3rd mark 346a and the 4th mark 346b is through calculated in advance, cause, second ratio between the arc length of the 4th arc (A4) of the 4th mark 346b of the arc length of the 3rd arc (A3) of each the 3rd mark 346a and this 3rd mark of next-door neighbour 346a is inversely proportional to (r2-R2)/(R3-R2).
In another specific embodiment, this first reflectivity is to be lower than this second reflectivity, and the 3rd reflectivity is to be higher than the 4th reflectivity.And, in same first pattern 342, the folded curve (C1) of the first mark 342a and the second mark 342b is through calculated in advance, cause, first ratio between the arc length of second arc (A2) of the second mark 342b of the arc length of first arc (A1) of each first mark 342a and this first mark of next-door neighbour 342a is inversely proportional to (r1-R1)/(R2-R1).In same second pattern 346, the folded curve (C2) of the 3rd mark 346a and the 4th mark 346b is through calculated in advance, cause, the one second ratio system between the arc length of the 4th arc (A4) of the 4th mark 346b of the arc length of the 3rd arc (A3) of each the 3rd mark 346a and this 3rd mark of next-door neighbour 346a is proportional to (r2-R2)/(R3-R2).
Be shown in Fig. 3 A equally, these first patterns 342 are to be used for assisting orienting interior surrounding edge circle that can write down label on the non-data side 14 of this discs 1.That is to say that this first radius (R1) is the inner ring radius that equals this discs 1 substantially.
Shown in Fig. 3 B, these second patterns 346 also can be used for assisting to orient the outermost border that can write down label on the non-data side 14 of this discs 1.That is to say that the 3rd radius (R3) is the outmost turns radius that equals this discs 1 substantially.Have unit, pattern or geometric position with Fig. 3 A duplicate numbers mark in Fig. 3 B, it defines with above identical to unit, pattern or the geometric position of each mark among Fig. 3 A, does not do at this and gives unnecessary details.What need emphasize is, in Fig. 3 B, the ratio between the arc length of second arc (A2) of the second mark 342b of the arc length of first arc (A1) of each first mark 342a and this first mark of next-door neighbour 342a is still followed direct ratio or is inversely proportional to the standard of (r1-R1)/(R2-R1).Second ratio between the arc length of the 4th arc (A4) of the 4th mark 346b of the arc length of the 3rd arc (A3) of each the 3rd mark 346a and this 3rd mark of next-door neighbour 346a is still followed inverse ratio or is proportional to the standard of (r2-R2)/(R3-R2).Therefore, these first patterns 342 and these second patterns 346 can be along with the changes that is arranged on radial position on this discs 1 (position in inner ring radius or position at the outmost turns radius), and cause the distortion of pattern itself.
In a specific embodiment, the 3rd radius (R3) is to equal (2R2-R1).
In a specific embodiment, shown in Fig. 3 A and Fig. 3 B, each first pattern 342 is other first ring scallop.Each first ring scallop 342 is determined by first central angle (θ 1) about this discs 1, and N is the integer that equals 2 π/θ 1.Each second pattern 346 is other second ring scallop.Each second ring scallop 346 is determined by second central angle (θ 2) about this discs 1, and M is the integer that equals 2 π/θ 2.
In a specific embodiment, this first central angle (θ 1) is to equal this second central angle (θ 2), and N equals M, shown in Fig. 3 A and Fig. 3 B.
See also Fig. 4 A and Fig. 4 B, these graphic announcement utilizations are according to the steps flow chart of the localization method 4 of the discs 1 of the 3rd preferred embodiment of the present invention.This localization method 4 is to allow the optical pick-up unit (not being illustrated among the figure) of optical information recording device (not being illustrated among the figure) be positioned at least one reference radial position on non-data side (or label face) 14 of this discs 1.
Shown in Fig. 4 A and Fig. 4 B, this localization method 4 is execution in step S40 at first, along with this discs 1 is rotated, will point to by the laser spots 42 that this optical pick-up unit sends on this these first pattern 342 or these second patterns 346 according to the 3rd preferred embodiment of the present invention.
Follow execution in step S41, along with these first patterns 342 or these second patterns 346 pass through this laser spots 42, sensing reflected light.
Then execution in step S42 converts this reflected light to reflectivity signals 44, shown in Fig. 4 B.
Then execution in step S43 monitors the work period ratio of this reflectivity signals 44, that is to say, the burst length of monitoring shown in Fig. 4 B hold time 444 with the ratio of recurrence interval 442.
Note, arrangement based on these first patterns 342 and these second patterns 346, the work period of this reflectivity signals 44 is than being the ratio that equals first change between the arc length of second arc (A2) of the second mark 342b of the arc length of first arc (A1) of each first mark 342a and next-door neighbour this first mark 342a alternatively, perhaps equals second ratio that changes between the arc length of arc length and the 4th arc (A4) of the 4th mark 346b of this 3rd mark of next-door neighbour 346a of the 3rd arc (A3) of each the 3rd mark 346a.
Then execution in step S44 after step S43 according to the change of work period of this reflectivity signals 44, optionally moves this laser spots 42 along first radial direction or along second radial direction opposite with this first radial direction.
Last execution in step S45 is positioned this optical pick-up unit for the first reference radial position place in this at least one reference radial position.In this first reference radial position place, the work period ratio of this reflectivity signals 44 is to equal first predetermined value.
In a specific embodiment, the ratio of this first change is to be proportional to (r1-R1)/(R2-R1), and the ratio of this second change is inversely proportional to (r2-R2)/(R3-R2), and this first predetermined value is to equal zero.In this case, in step S44, move this laser spots 42, and, then move this laser spots 42 along this second radial direction subsequently if the work period of this reflectivity signals 44 ratio reduces thereupon along this first radial direction.
In another specific embodiment, the ratio of this first change is inversely proportional to (r1-R1)/(R2-R1), and the ratio of this second change is to be proportional to (r2-R2)/(R3-R2), and this first predetermined value is to equal 100%.In this case, in step S44, move this laser spots 42, and, then move this laser spots 42 along this second radial direction subsequently if the work period of this reflectivity signals 44 ratio increases thereupon along this first radial direction.
Be shown in Fig. 4 A equally, in a specific embodiment, this localization method 4 further execution in step S46 along this second radial direction, move this laser spots 42.Then execution in step S47 is positioned this optical pick-up unit for the second reference radial position place in this at least one reference radial position.In this second reference radial position place, the work period ratio of this reflectivity signals 44 is to equal second predetermined value.
In addition, be shown in Fig. 4 A equally, in a specific embodiment, this localization method 4 further execution in step S48 along this first radial direction, move this laser spots 42.Then execution in step S49 is positioned this optical pick-up unit for the 3rd reference radial position place in this at least one reference radial position.In the 3rd reference radial position place, the work period ratio of this reflectivity signals 44 is to equal this second predetermined value.
In a specific embodiment, this second predetermined value is to equal 50%.In this specific embodiment,, be to write down interior surrounding edge circle of label or stipulating of outermost border on the non-data side 14 as this discs 1 according to first reference radial position that this predetermined value is determined.Among the step S47,, be as control laser beam stipulating towards the close amplitude of discs inner ring diameter according to second reference radial position that this predetermined value determined.In step S49,, be stipulating of the amplitude that leaves towards the discs inner ring diameter as the control laser beam according to the 3rd reference radial position that this predetermined value determined.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim scope of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (30)
1. method in order at least one reference radial position place on the non-data side that optical pick-up unit is positioned discs, N first pattern that repeats is in first annular region that is placed on the non-data side of this discs, N is a natural number, each first pattern be by one other and have first mark of first reflectivity and other and second mark with second reflectivity are constituted, this first annular region is determined by first radius (R1) and greater than second radius (R2) of this first radius, each first mark is contained other first arc that is determined by first radius (r1) that changes, and each second mark is contained other second arc that is determined by this first radius (r1) that changes, the radius (r1) of this first change is that this method comprises the following step in the scope that is limited to from this first radius (R1) to this second radius (R2):
(a) along with this discs is rotated, will point on these first patterns by the laser spots that this optical pick-up unit sends;
(b) along with these first patterns pass through this laser spots, sensing reflected light;
(c) convert this reflected light to reflectivity signals;
(d) monitor the work period ratio of this reflectivity signals, wherein the work period of this reflectivity signals is than being the ratio that equals first change between the arc length of second arc of second mark of the arc length of first arc of each first mark and this first mark of next-door neighbour;
(e) according to the change of the work period ratio of this reflectivity signals, optionally move this laser spots along first radial direction or along second radial direction opposite with this first radial direction; And
(f) this optical pick-up unit is positioned the first reference radial position place in this at least one reference radial position, in this first reference radial position place, the work period ratio of this reflectivity signals is to equal first predetermined value.
2. method according to claim 1, wherein this first reflectivity is to be higher than this second reflectivity, and the ratio of this first change is to be proportional to (r1-R1)/(R2-R1).
3. method according to claim 1, wherein this first reflectivity is to be lower than this second reflectivity, and the ratio of this first change is inversely proportional to (r1-R1)/(R2-R1).
4. method according to claim 1, wherein this second radius (R2) is the outmost turns radius that equals this discs substantially.
5. method according to claim 1, wherein this first radius (R1) is the inner ring radius that equals this discs substantially.
6. method according to claim 1, wherein each first pattern is other first ring scallop, each first ring scallop is determined by first central angle (θ 1) about this discs, and N is the integer that equals 2 π/θ 1.
7. method according to claim 1 further comprises the following step:
(g), move this laser spots along this second radial direction; And
(h) this optical pick-up unit is positioned the second reference radial position place in this at least one reference radial position, in this second reference radial position place, the work period ratio of this reflectivity signals is to equal second predetermined value.
8. method according to claim 7 further comprises the following step:
(i), move this laser spots along this first radial direction; And
(j) this optical pick-up unit is positioned the 3rd reference radial position place in this at least one reference radial position, in the 3rd reference radial position place, the work period ratio of this reflectivity signals is to equal the 3rd predetermined value.
9. method according to claim 1, M second pattern that repeats and being placed in second annular region on the non-data side of this discs wherein, M is a natural number, each second pattern be by one other and have the 3rd mark of the 3rd reflectivity and other and the 4th mark with the 4th reflectivity are constituted, this second annular region is determined by this second radius (R2) and greater than the 3rd radius (R3) of this second radius (R2), each the 3rd mark is contained other the 3rd arc that is determined by second radius (r2) that changes, and each the 4th mark is contained other the 4th arc that is determined by this second radius (r2) that changes, the radius (r2) of this second change is to be limited to from this second radius (R2) to the scope of the 3rd radius (R3), in step (a), this laser spots is to point on these first patterns or these second patterns, in step (b), this reflected light be along with these first patterns or these second patterns by this laser spots sensed arriving, in step (d), the work period of this reflectivity signals is than being the ratio that equals this first change between the arc length of second arc of second mark of the arc length of first arc of each first mark and this first mark of next-door neighbour alternatively, perhaps equals second ratio that changes between the arc length of arc length and the 4th arc of the 4th mark of this 3rd mark of next-door neighbour of the 3rd arc of each the 3rd mark.
10. method according to claim 9, wherein this first reflectivity is to be higher than this second reflectivity, the 3rd reflectivity is to be lower than the 4th reflectivity, the ratio of this first change is to be proportional to (r1-R1)/(R2-R1), and the ratio of this second change is inversely proportional to (r2-R2)/(R3-R2).
11. method according to claim 9, wherein this first reflectivity is to be lower than this second reflectivity, the 3rd reflectivity is to be higher than the 4th reflectivity, the ratio of this first change is inversely proportional to (r1-R1)/(R2-R1), and the ratio of this second change is to be proportional to (r2-R2)/(R3-R2).
12. method according to claim 9, wherein each first pattern is other first ring scallop, each first ring scallop is determined by first central angle (θ 1) about this discs, and N is the integer that equals 2 π/θ 1, each second pattern is other second ring scallop, each second ring scallop is determined by second central angle (θ 2) about this discs, and M is the integer that equals 2 π/θ 2.
13. method according to claim 12, wherein this first central angle (θ 1) is to equal this second central angle (θ 2), and N equals M.
14. method according to claim 9, wherein the 3rd radius (R3) is to equal (2R2-R1).
15. method according to claim 9, wherein the 3rd radius (R3) is the outmost turns radius that equals this discs substantially.
16. method according to claim 9 further comprises the following step:
(g), move this laser spots along this second radial direction; And
(h) this optical pick-up unit is positioned the second reference radial position place in this at least one reference radial position, in this second reference radial position place, the work period ratio of this reflectivity signals is to equal second predetermined value.
17. method according to claim 16 further comprises the following step:
(i), move this laser spots along this first radial direction; And
(j) this optical pick-up unit is positioned the 3rd reference radial position place in this at least one reference radial position, in the 3rd reference radial position place, the work period ratio of this reflectivity signals is to equal this second predetermined value.
18. a discs comprises:
Data surface, the structure of this data surface are to cooperate storage data;
Non-data side, the structure of this non-data side is to accept label; And
N first pattern that repeats is in first annular region that is placed on the non-data side of this discs, N is a natural number, each first pattern be by one other and have first mark of first reflectivity and other and second mark with second reflectivity are constituted, this first annular region is determined by first radius (R1) and greater than second radius (R2) of this first radius, each first mark is contained other first arc that is determined by first radius (r1) that changes, and each second mark is contained other second arc that is determined by this first radius (r1) that changes, and radius (r1) of this first change is in the scope that is limited to from this first radius (R1) to this second radius (R2).
19. discs according to claim 18, wherein this first reflectivity is to be higher than this second reflectivity, and the ratio between the arc length of second arc of second mark of the arc length of first arc of each first mark and this first mark of next-door neighbour is to be proportional to (r1-R1)/(R2-R1).
20. discs according to claim 18, wherein this first reflectivity is to be lower than this second reflectivity, and the ratio between the arc length of second arc of second mark of the arc length of first arc of each first mark and this first mark of next-door neighbour is inversely proportional to (r1-R1)/(R2-R1).
21. discs according to claim 18, wherein each first pattern is other first ring scallop, each first ring scallop is determined by first central angle (θ 1) about this discs, and N is the integer that equals 2 π/θ 1.
22. discs according to claim 18, wherein this second radius (R2) is the outmost turns radius that equals this discs substantially.
23. discs according to claim 18, wherein this first radius (R1) is the inner ring radius that equals this discs substantially.
24. discs according to claim 18 further comprises:
M second pattern that repeats is in second annular region that is placed on the non-data side of this discs, M is a natural number, each second pattern be by one other and have the 3rd mark of the 3rd reflectivity and other and the 4th mark with the 4th reflectivity are constituted, this second annular region is determined by this second radius (R2) and greater than the 3rd radius (R3) of this second radius, each the 3rd mark is contained other the 3rd arc that is determined by second radius (r2) that changes, and each the 4th mark is contained other the 4th arc that is determined by this second radius (r2) that changes, and radius (r2) of this second change is to be limited to from this second radius (R2) to the scope of the 3rd radius (R3).
25. discs according to claim 24, wherein this first reflectivity is to be higher than this second reflectivity, the 3rd reflectivity is to be lower than the 4th reflectivity, first ratio between the arc length of second arc of second mark of the arc length of first arc of each first mark and this first mark of next-door neighbour is to be proportional to (r1-R1)/(R2-R1), and second ratio between the arc length of the 4th arc of the 4th mark of the arc length of the 3rd arc of each the 3rd mark and this 3rd mark of next-door neighbour is inversely proportional to (r2-R2)/(R3-R2).
26. discs according to claim 24, wherein this first reflectivity is to be lower than this second reflectivity, the 3rd reflectivity is to be higher than the 4th reflectivity, first ratio between the arc length of second arc of second mark of the arc length of first arc of each first mark and this first mark of next-door neighbour is inversely proportional to (r1-R1)/(R2-R1), and second ratio between the arc length of the 4th arc of the 4th mark of the arc length of the 3rd arc of each the 3rd mark and this 3rd mark of next-door neighbour is to be proportional to (r2-R2)/(R3-R2).
27. discs according to claim 24, wherein each first pattern is other first ring scallop, each first ring scallop is determined by first central angle (θ 1) about this discs, and N is the integer that equals 2 π/θ 1, each second pattern is other second ring scallop, each second ring scallop is determined by second central angle (θ 2) about this discs, and M is the integer that equals 2 π/θ 2.
28. discs according to claim 27, wherein this first central angle (θ 1) is to equal this second central angle (θ 2), and N equals M.
29. discs according to claim 24, wherein the 3rd radius (R3) is to equal (2R2-R1).
30. discs according to claim 24, wherein the 3rd radius (R3) is the outmost turns radius that equals this discs substantially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610071815 CN101038777A (en) | 2006-03-16 | 2006-03-16 | Radial position location for non-data surface of CD disc |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610071815 CN101038777A (en) | 2006-03-16 | 2006-03-16 | Radial position location for non-data surface of CD disc |
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| CN101038777A true CN101038777A (en) | 2007-09-19 |
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| CN 200610071815 Pending CN101038777A (en) | 2006-03-16 | 2006-03-16 | Radial position location for non-data surface of CD disc |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117628B (en) * | 2009-12-30 | 2012-07-18 | 建兴电子科技股份有限公司 | Method for forming label tag of blue-ray disc |
| CN102982830A (en) * | 2011-09-06 | 2013-03-20 | 广明光电股份有限公司 | Label surface signal correcting method |
-
2006
- 2006-03-16 CN CN 200610071815 patent/CN101038777A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117628B (en) * | 2009-12-30 | 2012-07-18 | 建兴电子科技股份有限公司 | Method for forming label tag of blue-ray disc |
| CN102982830A (en) * | 2011-09-06 | 2013-03-20 | 广明光电股份有限公司 | Label surface signal correcting method |
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