CN1412746A - Method for defining optical writing-in powder and its optical disk access system - Google Patents
Method for defining optical writing-in powder and its optical disk access system Download PDFInfo
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- CN1412746A CN1412746A CN 01137050 CN01137050A CN1412746A CN 1412746 A CN1412746 A CN 1412746A CN 01137050 CN01137050 CN 01137050 CN 01137050 A CN01137050 A CN 01137050A CN 1412746 A CN1412746 A CN 1412746A
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- capability correction
- correction district
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- optical disc
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Abstract
The present invention relates to a determination method of optical writing power and its optical disk access system. In addition to traditional internal edge power calibration zone an external edge power calibration zone is added on the external edge portion of constant linear velocity format erasble optical disk, if according to the data writing speed selected by user, when the optical disk rotating speed required for power regulation and calibration in the erasable optical disk internal edge power calibration zone will be greater than optical power calibration limit, the optical disk access system can utilzie external edge power calibration zone and uses lower optical disk rotating speed to make writing power regulation and calibration so as to correctness of power regulation and calibration.
Description
Technical field
The present invention relates to a kind of method and optical disc accessing that determines the optics Writing power, except traditional inner edge capability correction district, also on the outer edge of CLV format disc, set up an outer rim capability correction district, and flexibly be chosen in inner edge capability correction district or outer rim capability correction district both one of carry out the power adjustment, to guarantee the correctness of power adjustment.
Background technology
Along with the progress of electronic technology and the reduction of cost, optics storage facility (optical storagedevice), for example erasable formula CD-ROM drive (CD-R/CD-RW drive) ... Deng, be widely used on the computer system, and gradually become the peripheral access equipment of its standard.Generally speaking, this type CD-ROM drive is in that data to be write CD (optical disc) preceding, an optics Writing capability correction (optical powercalibration) program is carried out in the capital earlier, and main system will be arranged at a capability correction district (powercalibration area of CD inner edge portion; PCA) write specific data in advance, again it is read back, detect the characteristic of the CD that uses by this, and determine needed Writing power, in the hope of correctly data being write in the CD.
Fig. 1 shows the side diagrammatic cross-section of conventional optical disc 10.Conventional optical disc 10 is in the form of annular discs and corresponding to a central shaft 11; CD 10 includes a central part 12, one capability correction districts 14, one region of data storages 16, and one at last may terminator (last possible lead-out area) 18.Above-mentioned capability correction district 14 is arranged at the internal ring portion outside of above-mentioned central part 12 (that is be positioned at) of CD 10, in order to carry out the usefulness of optical power calibrating; Above-mentioned last possibility terminator 18 is arranged at the outer portion (or outer rim) of CD 10, in order to the message of recording disk 10 EDs; Above-mentioned region of data storage 16 is arranged between above-mentioned capability correction district 14 and the above-mentioned last possibility terminator 18, in order to the record data that the user write.
For Constant Linear Velocity (constant linear velocity; CLV) CD of form, CD-WO (Compact Disc Write Once) for example ... Deng, the optical read/write head of CD-ROM drive remains constant speed degree (constant velocity) with the relative moving speed of CD when carrying out data and write or read, and with on the CD read or writing position (being the radius of optical read/write head on CD) has nothing to do.
Fig. 2 shows the graph of a relation of the angular velocity (W) of CLV format disc corresponding to CD radius (R).Fig. 3 shows the graph of a relation of the linear velocity (V) of CLV format disc corresponding to CD radius (R).
When selecting a CLV format disc to be carried out data when writing and reading with lower V1 Constant Linear Velocity (as the data access speed of 12 times of speed=1800KB/sec), in the CD-ROM drive rotational angular velocity of servo motor (W) corresponding to the relation of CD radius (R) shown in the CLV1 curve of Fig. 2.Because the CD of CLV form has the characteristic (shown in the CLV1 curve of Fig. 3) of Constant Linear Velocity V1, therefore when writing (or reading) this CLV format disc, the rotating speed of servo motor in the CD-ROM drive (angular velocity angular velocity), must along with write the reduced radius of (or reading) CD and accelerate (as shown in Figure 2) so that writing or reading of Constant Linear Velocity carried out in any position that maintains on the CD.For example, to the outer zone (for example position of radius R 2) of CD when writing or reading, the angular velocity that CD must provide is W2, to the Nei Huan district (for example position of radius R 1) of CD when writing or reading, for keeping Constant Linear Velocity (V1), so the angular velocity of CD need increase to W1, wherein W1＞W2.
As previously mentioned, traditional optical power calibrating program only can be carried out in above-mentioned capability correction district.Because the capability correction district is positioned at the inner edge portion (the radius R pc of position is more less than R1) of CD, therefore when desiring to carry out capability correction in the capability correction district, if will keep same Constant Linear Velocity (doubly fast as 12x), CD also must provide higher relatively angular velocity Wpc1.
Basically, along with the velocity of rotation W of CD-ROM drive servo motor is high more, then more near the design limit of this optical drive mechanism, so mechanism's vibrations can strengthen gradually, cause the capability correction " reappearance " under high rotating speed to descend, and the possibility that makes a mistake is arranged more.Generally speaking, on the design practice of CD-ROM drive, when the rotating speed (that is angular velocity W of CD) of servo motor exceeds rotating speed restriction, then can't carry out reliable power adjustment in the capability correction district.At this, this rotating speed restriction is called OPC rotating speed restriction (OPC limit).
The OPC rotating speed of CD is restricted to WL among Fig. 2, when using linear velocity V1 that CD is carried out access, is that Wpc1 is still less than OPC rotating speed restriction WL, so the action of the capability correction of CD can't be affected owing to carry out the required rotating speed of capability correction.
With reference to Fig. 2,3 curve C LV2, when select using higher linear velocity V2 (as the data access speed of 24x times of speed=3600KB/sec) when CD is carried out access, (position of radius R PC) carried out the required rotating speed of power adjustment and then increased and be Wpc2 in the capability correction district.Because Wpc2 has exceeded OPC rotating speed restriction WL, thus the i.e. significantly raising of the possibility that the result of capability correction makes a mistake, so the capability correction operation of CD is had obviously bad influence.Therefore this CD-ROM drive be because can't carry out the capability correction action of V2 linear velocity, and then is forced to such an extent that abandon providing the selection that writes as the V2 linear velocity.
Summary of the invention
In view of this, a purpose of the present invention except traditional inner edge capability correction district, is also set up an outer rim (second) capability correction district for the determining method of the optics Writing power of a kind of novelty of proposition on the outer edge of CLV format disc.Calculate and the velocity of rotation of winning according to the selected writing speed V2 of user, when this optical disc accessing rotated this erasable optical disk according to this first velocity of rotation, this optical disc accessing can write the first capability correction district with data by the V2 writing speed.If carry out the words of the first required velocity of rotation of power adjustment in inner edge (first) capability correction district greater than the restriction of OPC rotating speed, then change into outer rim (second) capability correction district and carry out the power adjustment with the second lower velocity of rotation, guaranteeing the correctness of power adjustment, and then allow CD-ROM drive to be operable in higher V2 writing speed.
Another object of the present invention mainly is a determining method of using above-mentioned optics Writing power, in order to guarantee the correctness of power adjustment for proposing a kind of optical disc accessing of novelty.
For reaching above-mentioned purpose the present invention a kind of method that determines the optics Writing power is proposed, be applicable to the CD that writes with Constant Linear Velocity (CLV) form, may further comprise the steps: one first capability correction district and one second capability correction district (a) are set respectively on the internal ring portion and outer portion of this CD, are provided with data recorded area between this first capability correction district and the second capability correction district; (b) select this data recorded area is write the fashionable writing speed that will use; (c) according to this writing speed, draw will to the inner edge portion of this data recorded area carry out Constant Linear Velocity write fashionable, required first velocity of rotation that reaches of this CD; (d) carry out the correction of Writing power, when first velocity of rotation of this CD exceeds one first restriction rotating speed, in this second capability correction district, carry out the adjustment of Writing power, otherwise in this first capability correction district, carry out the adjustment of Writing power; And, (e) according to the correction result of Writing power, determine based on this writing speed this CD is write a needed optics Writing power.
For reaching above-mentioned purpose the present invention a kind of optical disc accessing is also proposed, comprise: an access device, in order to data are write a CD with Constant Linear Velocity (CLV) form, on the internal ring portion and outer portion of this CD, be respectively arranged with one first capability correction district and one second capability correction district, be provided with the data storage district between this first capability correction district and the second capability correction district; And a control device carries out data in order to decision to this CD and writes fashionable optics Writing power, and controls the operation of this optical disc accessing.Wherein, this control device according to a writing speed of selected use draw will to the inner edge portion of this data recorded area carry out Constant Linear Velocity write fashionable, required one first velocity of rotation that reaches of this CD; When this first velocity of rotation of this CD exceeded one first restriction rotating speed, this control device carried out the adjustment of Writing power in this second capability correction district, otherwise this control device carries out the adjustment of Writing power in this first capability correction district.
The above-mentioned first restriction rotating speed is in the time of can correctly carrying out the power adjustment in this first capability correction district, the maximum rotational speed of this CD.
Also propose a kind of for reaching above-mentioned purpose the present invention by the Writing power method of optical disc accessing decision to an erasable optical disk, this erasable optical disk has a data recorded area, one first capability correction district and one second capability correction district, this first capability correction district and this second capability correction district are arranged at respectively on the internal ring portion and outer portion of this CD, this data recorded area is arranged between this first capability correction district and this second capability correction district, this Writing power determining method comprises step: select a writing speed, this optical disc accessing can write a preset data amount to this data recorded area according to this writing speed in a unit interval; Calculate one first velocity of rotation according to this writing speed, when this optical disc accessing rotated this erasable optical disk with this first velocity of rotation, this optical disc accessing can write this preset data amount to this first capability correction district in this unit interval; When this first velocity of rotation was lower than one first restriction rotating speed, then this optical disc accessing can carry out the Writing power adjustment in this first capability correction district; And when this first velocity of rotation exceeded this first restriction rotating speed, then this optical disc accessing can carry out the Writing power adjustment in this second capability correction district.
Description of drawings
By the description of carrying out below in conjunction with the accompanying drawing that an example exemplarily is shown, above-mentioned and other purposes of the present invention and characteristics will become apparent, wherein:
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described below in detail:
Fig. 1 shows the side diagrammatic cross-section of conventional optical disc.
Fig. 2 shows the graph of a relation of the angular velocity (W) of CLV format disc corresponding to CD radius (R).
Fig. 3 shows the graph of a relation of the linear velocity (V) of CLV format disc corresponding to CD radius (R).
Fig. 4 shows the synoptic diagram of optical disc accessing of the present invention.
Fig. 5 display application optics Writing power of the present invention determining method is to carry out the process flow diagram that data write.
Embodiment
Fig. 4 shows the synoptic diagram of optical disc accessing 30 of the present invention.Optical disc accessing 30 comprises: an access device 32, in order to data are write a CD 34 with Constant Linear Velocity (CLV) form; And a control device 36 carries out data in order to decision to this CD 34 and writes fashionable optics Writing power, and controls the operation of this optical disc accessing 30.
Above-mentioned CD 34 is in the form of annular discs and be symmetrical in a central shaft 31.CD 34 includes a central part 38, one inner edge capability correction districts 40, one data recorded areas 46 by the center in regular turn to outer rim, and one finally may terminator 48.Above-mentioned inner edge capability correction district 40 is arranged at the internal ring portion outside of above-mentioned central part 38 (that is be positioned at) of CD 34, in order to carry out optical power calibrating; Above-mentioned last possibility terminator 48 is arranged at the outer portion (or outer rim) of CD 34, in order to the message of recording disk 34 EDs; Above-mentioned region of data storage 46 is arranged between above-mentioned inner edge capability correction district 40 and the above-mentioned last possibility terminator 48, in order to the record data that the user write.Note,, in the last possibility terminator 48 of CD 34, also have additional an outer rim capability correction district 52 in order to realize the present invention.
So, write fashionable when above-mentioned CD 34 is carried out Constant Linear Velocity, above-mentioned control device 36 is according to a writing speed of selected use, calculate when above-mentioned inner edge correction zone 40 is carried out the power adjustment and kept this writing speed first velocity of rotation that these optical disc accessing 30 servo motors are required.When first velocity of rotation of aforementioned calculation gained exceeded one first restriction rotating speed (for example above-mentioned OPC restriction rotating speed), above-mentioned control device 36 changed the adjustment of carrying out Writing power in above-mentioned outer rim capability correction district 52 into; Otherwise above-mentioned control device 36 still maintains the adjustment of carrying out Writing power in the above-mentioned inner edge capability correction district 40.
The present invention determines the method for optics Writing power, is applicable to the CD 34 that writes with Constant Linear Velocity (CLV) form.Again, as shown in Figure 4, on the CD 34 except being provided with inner edge capability correction district 40, also in CD 34 last may terminator 48, have additional an outer rim capability correction district 52.
Fig. 5 display application optics Writing power of the present invention determining method carry out the process flow diagram that data write.
Step 500: provide institute to desire to write this optical disc data.
Step 501: the writing speed that decision will be used, for example select 4 times of speed, 8 times of speed ... 24 times of literary sketches are gone into; At this hypothesis writing speed is 24 times of speed (3600KB/sec).
Step 503: when first velocity of rotation of this CD exceeds OPC restriction rotating speed, then in above-mentioned outer rim capability correction district 52, carry out the adjustment of Writing power.
Step 504: when first velocity of rotation of this CD does not exceed above-mentioned OPC restriction rotating speed, then still maintain the adjustment of carrying out Writing power in the above-mentioned inner edge capability correction district 40.
Behind decision light Writing power (step 505), promptly CD 34 is carried out write (step 506) of data.
Please refer to Fig. 2,3 again, when the user selects the writing speed (for example being 12 times of speed) of V1, because when in inner edge capability correction district 40, carrying out the power adjustment, the CD 34 required first rotating speed WPC1 that reach do not exceed OPC restriction rotating speed, so with 12 times of speed CD 34 is write, all can in inner edge capability correction district 40, carry out the adjustment of power.
When the user selects the writing speed (for example being 24 times of speed) of V2, because when in inner edge capability correction district 40, carrying out the power adjustment, the CD 34 required first rotating speed WPC2 that reach have exceeded OPC restriction rotating speed, so CD 34 is write with 24 times of speed, must be in outer rim capability correction district 52, carry out the adjustment of power with lower CD velocity of rotation, in order to guarantee the correctness of power adjustment.
The present invention also can be applied among other optical record medium except being applicable to CD-R, CD-RW.For example: DVD-R, DVD-RW, DVD+RW ... or the like.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly be familiar with this skill person; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (12)
1. a method that determines the optics Writing power is applicable to the CD that writes with Constant Linear Velocity (CLV) form, may further comprise the steps:
One first capability correction district and one second capability correction district are set respectively on the internal ring portion and outer portion of this CD; Wherein, be provided with data recorded area between this first capability correction district and the second capability correction district;
Selection is write the fashionable writing speed that will use to this data recorded area;
According to this writing speed, draw will to this first capability correction district carry out Constant Linear Velocity write fashionable, required first velocity of rotation that reaches of this CD;
Carry out the correction of Writing power; Wherein, when this first velocity of rotation of this CD exceeds one first restriction rotating speed, in this second capability correction district, carry out the adjustment of Writing power, otherwise in this first capability correction district, carry out the adjustment of Writing power; And
According to the correction result of Writing power, determine and this CD is carried out Constant Linear Velocity write a required optics Writing power.
2. the method for decision optics Writing power as claimed in claim 1, wherein, this first restriction rotating speed is in the time of can correctly carrying out the Writing power adjustment in this first capability correction district, the maximum rotational speed of this CD.
3. the method for decision optics Writing power as claimed in claim 1, wherein, this second power control zone is arranged in the last possibility terminator of this CD outer portion.
4. the method for decision optics Writing power as claimed in claim 3, wherein, this last possibility terminator is positioned at the outer rim of this CD, in order to write down the message that this data of optical disk finishes.
5. optical disc accessing comprises:
One access device, in order to data are write a CD with Constant Linear Velocity (CLV) form, on the internal ring portion and outer portion of this CD, be respectively arranged with one first capability correction district and one second capability correction district, be provided with the data storage district between this first capability correction district and the second capability correction district; And
One control device carries out data in order to decision to this CD and writes fashionable optics Writing power, and controls the operation of this optical disc accessing;
Wherein, this control device according to a writing speed of selected use draw will to this first capability correction district carry out Constant Linear Velocity write fashionable, required one first velocity of rotation that reaches of this CD; When this first velocity of rotation of this CD exceeded one first restriction rotating speed, this control device carried out the adjustment of Writing power in this second capability correction district, otherwise this control device carries out the adjustment of Writing power in this first capability correction district.
6. optical disc accessing as claimed in claim 5, wherein, this first restriction rotating speed is in the time of can correctly carrying out the power adjustment in this first capability correction district, the maximum rotational speed of this CD.
7. as 5 described optical disc accessings of claim the, wherein, this second power control zone is arranged in the last possibility terminator of this CD outer portion.
8. optical disc accessing as claimed in claim 7, wherein, this may stop the outer rim that fauna is positioned at this CD at last, in order to write down the message that this data of optical disk finishes.
9. one kind by the optical disc accessing decision Writing power method to an erasable optical disk, this erasable optical disk has a data recorded area, one first capability correction district and one second capability correction district, this first capability correction district and this second capability correction district are arranged at respectively on the internal ring portion and outer portion of this CD, this data recorded area is arranged between this first capability correction district and this second capability correction district, and this Writing power determining method comprises step:
Select a writing speed, this optical disc accessing can write a preset data amount to this data recorded area according to this writing speed in a unit interval;
Calculate one first velocity of rotation according to this writing speed, when this optical disc accessing rotated this erasable optical disk with this first velocity of rotation, this optical disc accessing can write this preset data amount to this first capability correction district in this unit interval;
When this first velocity of rotation was lower than one first restriction rotating speed, then this optical disc accessing can carry out the Writing power adjustment in this first capability correction district; And
When this first velocity of rotation exceeded this first restriction rotating speed, then this optical disc accessing can carry out the Writing power adjustment in this second capability correction district.
10. as claimed in claim 9 by the Writing power method of optical disc accessing decision to an erasable optical disk, wherein, this first restriction rotating speed is lower than the servo motor maximum rotational speed of this optical disc accessing.
11. as claimed in claim 9 by the Writing power method of optical disc accessing decision to an erasable optical disk, wherein, this second power control zone is arranged in the last possibility terminator of this CD outer portion.
12. as claimed in claim 11 by the Writing power method of optical disc accessing decision to an erasable optical disk, wherein, this last possibility terminator is positioned at the outer rim of this CD, in order to write down the message that this data of optical disk finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011370505A CN1185632C (en) | 2001-10-16 | 2001-10-16 | Method for defining optical writing-in powder and its optical disk access system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011370505A CN1185632C (en) | 2001-10-16 | 2001-10-16 | Method for defining optical writing-in powder and its optical disk access system |
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| Publication Number | Publication Date |
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| CN1412746A true CN1412746A (en) | 2003-04-23 |
| CN1185632C CN1185632C (en) | 2005-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011370505A Expired - Fee Related CN1185632C (en) | 2001-10-16 | 2001-10-16 | Method for defining optical writing-in powder and its optical disk access system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297957C (en) * | 2004-02-10 | 2007-01-31 | 建兴电子科技股份有限公司 | Method for storing correction data to circuit board and CD driver implementing the method |
| CN100385513C (en) * | 2003-10-30 | 2008-04-30 | 日本胜利株式会社 | Optical disc, method and apparatus for recording signal thereon |
| CN1906680B (en) * | 2004-06-10 | 2010-09-01 | 日本先锋公司 | Information recording medium and information recording device and method |
| CN102044275B (en) * | 2009-10-19 | 2012-10-10 | 建兴电子科技股份有限公司 | Compact disc, compact disc read-only memory (CD-ROM), method for using compact disc read-only memory, and method for producing compact disc |
-
2001
- 2001-10-16 CN CNB011370505A patent/CN1185632C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385513C (en) * | 2003-10-30 | 2008-04-30 | 日本胜利株式会社 | Optical disc, method and apparatus for recording signal thereon |
| CN101202067B (en) * | 2003-10-30 | 2010-06-16 | 日本胜利株式会社 | Recording method and apparatus |
| CN1297957C (en) * | 2004-02-10 | 2007-01-31 | 建兴电子科技股份有限公司 | Method for storing correction data to circuit board and CD driver implementing the method |
| CN1906680B (en) * | 2004-06-10 | 2010-09-01 | 日本先锋公司 | Information recording medium and information recording device and method |
| CN102044275B (en) * | 2009-10-19 | 2012-10-10 | 建兴电子科技股份有限公司 | Compact disc, compact disc read-only memory (CD-ROM), method for using compact disc read-only memory, and method for producing compact disc |
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| Publication number | Publication date |
|---|---|
| CN1185632C (en) | 2005-01-19 |
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