CN100458932C - Learning type write strategy adjusting method and device - Google Patents
Learning type write strategy adjusting method and device Download PDFInfo
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- CN100458932C CN100458932C CNB2006100791465A CN200610079146A CN100458932C CN 100458932 C CN100458932 C CN 100458932C CN B2006100791465 A CNB2006100791465 A CN B2006100791465A CN 200610079146 A CN200610079146 A CN 200610079146A CN 100458932 C CN100458932 C CN 100458932C
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Abstract
This invention proposes device and an adjustment method about write-learning strategy. Using this invention, the same drive for the same type of CD manufacturers in the write-action is completed, reading the written data again and in accordance with the same vendors to adjust the same as the pattern of discs into the strategy, and the write strategy after adjustment recorded in the memory, one of the same vendors present the same type of discs implementation into action again, using the adjusted strategy to write the data. Thus the written quality of the same pattern of the same vendor's discs will get better With increasing written operations and it can keep the good quality.
Description
Technical field
The present invention is a kind of method of adjustment and device thereof of CD-ROM drive write-in policy, and the method for adjustment and the device thereof of the learning type write strategy of particularly being done relevant for the identical kenel discs of same label.
Background technology
Because scientific-technical progress, the storage volume of discs constantly improves, and therefore utilizes discs to come Backup Data to be economic way in fact.In general, when CD-ROM drive receive main frame (Host) end write command after promptly begin to receive host side sends write data and will write data recording in discs.That is to say, when CD-ROM drive receive write command and with all write Data Receiving and write the whole flow process that discs finishes promptly may be defined as a write activity (Write Action).And in the process of write activity, write the coding that data can continue process CD-ROM drive control chip.Control chip can be encoded with the CD discs becomes eight commentaries on classics, 14 modulations (Eight to Fourteen Modulation, hereinafter to be referred as 8/14 modulation) signal, control chip can be encoded with the DVD discs becomes eight commentaries on classics 16 (Eight toSixteen Modulation is hereinafter to be referred as 8/16 modulation) signals.In general, the staggered information of light and shade (Land and Pit) that on behalf of discs, 8/14 or 8/16 modulation signal promptly will form in orbit, and the record length of individual other " bright " and " secretly " process must be between 3T～11T after converting.
That is in the process of whole write activity, CD-ROM drive can utilize higher laser power to focus on the part that forms " secretly " in orbit on the track of discs, and utilizes low laser power to focus on the part that forms " bright " in orbit.The driving signal of meeting standard laser diode is in order to form the part of " secretly " and the part of " bright " in the specifications of CD-ROM drive (Specification) on discs, and this is the write-in policy (Write Strategy) that specifications are referred to as.
Please refer to Fig. 1 (a) with (b), Fig. 1 (a) is the write-in policy of CD-R discs, and Fig. 1 (b) is the write-in policy of CD-RW.Because the dyestuff material difference of discs data Layer, therefore, at the discs of different kenels, CD-ROM drive is used different write-in policies forms " secretly " on discs the part 10,20 (is example with 5T and 3T length) and the part 15 (is example with 4T length) of " bright ".By the write-in policy of CD-R discs as can be known, utilize amplitude to be Writing power (Pw, Write Power) the direct driving laser diode of single pulse can form the part of " secretly " on the CD-R discs, utilize amplitude can on the CD-R discs, form the part of " bright " for substrate bias power (Pb, Bias Power) driving laser diode; By the write-in policy of CD-RW discs as can be known, utilize amplitude to be Writing power (Pw) and substrate bias power (Pb, Bias Power) mutual appearance a plurality of pulses that form come the driving laser diode can form the part of " secretly " on the CD-RW discs, and utilizing amplitude is that power (Pe ErasePower) the driving laser diode of erasing can form the part of " bright " on the CD-RW discs.
In general, because the dyestuff of its data Layer of discs of discs manufacturer of every family manufacturing is not quite similar, even if also be not quite similar with its write-in policy of discs of a kind of kenel.With the CD-R discs, the size of Writing power with and initial, concluding time of pulse all can cause great influence for writing quality (Write Quality), therefore, CD-ROM drive is before dispatching from the factory, the research staff must do an experiment widely at the different kenel discs of different labels, and all write-in policies that adjust the different kenel discs of various labels also are recorded in all write-in policies in the CD-ROM drive internal memory, for example non-volatile (Non-volatile) ROM (read-only memory) or flash memory make the quality that writes of CD-ROM drive maintain on the level.
With the CD-R discs is example, and the research staff can be used as a standard write-in policy with the write-in policy of being advised in the specifications.The pairing write-in policy of CD-R discs of different labels then is the setting of adjustment standard write-in policy and obtaining, the size of for example adjusting Writing power with and initial, the concluding time or the pulse width of pulse, write-in policy after feasible adjustment is finished is applicable to the discs of the CD-R of a certain specific label, certainly, all types of discs (DVD+R, DVD+RW, DVD-R, DVD-RW, CD-R or CD-RW) write-in policy of other standard write-in policy all being arranged and being applicable to the specific label of specific kenel.
That is to say that after discs was inserted CD-ROM drive, CD-ROM drive can be confirmed the kenel of discs, for example DVD+R, DVD+RW, DVD-R, DVD-RW, CD-R or CD-RW earlier.Come again, can learn the manufacturer of discs by the data-track of discs, so the control chip of CD-ROM drive promptly can be by the write-in policy of learning this this discs of manufacturer in the internal memory, when CD-ROM drive begin to receive write data and produce 8/14 or 8/16 modulation signal after, come the driving laser diode on the track of this discs, to produce the information that light and shade is interlocked according to this specific write-in policy again.
Yet,, can not put down in writing the write-in policy of the whole world merchant's of all manufacturing factories all types discs because the memory size of CD-ROM drive is limited.Therefore, only can put down in writing the write-in policy of the various kenel discs of the big factory of CD in the internal memory of general CD-ROM drive, and other parts there is not the discs of record, then come the driving laser diode with the standard write-in policy without exception.That is to say that after discs was inserted CD-ROM drive, CD-ROM drive can be confirmed the kenel of discs, for example DVD+R, DVD+RW, DVD-R, DVD-RW, CD-R or CD-RW earlier.Come, by the manufacturer that the data-track of discs can be learnt discs, if there is no the data of corresponding manufacturer in the internal memory, then CD-ROM drive can utilize the standard write-in policy in the internal memory to come the driving laser diode again.For example, when the kenel of discs is DVD+R, then the standard write-in policy with the DVD+R discs comes the driving laser diode; Perhaps, when the kenel of discs is CD-RW, then the standard write-in policy with the CD-RW discs comes the driving laser diode.In general, it writes inferior quality to utilize write activity that the standard write-in policy finished, therefore usually can cause CD-ROM drive error rate when reading the discs that burning finishes higher or can't read at all.
In general, the discs shop discs of being peddled comprises various labels and various kenel.The user can make a big purchase the discs of particular vendor particular type traditionally simultaneously in large quantities, for example buys the discs of 100 or 50 particular vendor particular types simultaneously.Yet when there is no the write-in policy of this particular vendor specific light disc in the internal memory of CD-ROM drive, CD-ROM drive is used the standard write-in policy and is carried out write activity, therefore, probably causes all discs to write quality situation all very poor or that can't read and takes place.
Please refer to Fig. 2, its shown method that writes quality for known improvement.This process flow diagram is that United States Patent (USP) number US 6,636,468 patents are disclosed.At first, CD-ROM drive is carried out best power control (OptimumPower Control, be called for short OPC) proofread and correct (step 415), and according to the power of proofreading and correct of setting laser as a result (step 420), and come write data (step 425) in discs with the laser power of setting.Above-mentioned three steps are known CD-ROM drive when carrying out write activity, the step that must carry out.
This invention is characterised in that: when data are not complete as yet when writing discs (step 427), need the indication (step 430) adjusted once more if produce laser power, then stop to write and reading the data of before having write (step 440) at halt; Then adjust laser power (step 445 and step 455) according to the quality that writes of the data of before having write when the writing the bad needs of quality and readjust laser power of the data of before having write, then laser power is not adjusted (step 445) when the writing quality and do not need to readjust laser power of the data of before having write; Afterwards, on discs, seek starting point in order to write data (step 450) again, and continue to come write data (step 425) in discs with the laser power of setting.
The main purpose of above-mentioned patent is when carrying out write activity (between step 410 and the step 429), at any time monitor laser power, when need readjusting, laser power stops to write data in halt, and read the data before write and readjust laser power and obtain new laser power to write quality according to it, afterwards, on discs, seek starting point and carry out write activity with the laser power of upgrading.
Yet CD-ROM drive is in order to reach the effect of known invention, and the design of its internal control chip must be more complicated.For instance, (I) optical read/write head must stop write data at halt, drive optical read/write head to previous track then and read the data of having write, and readjust laser power according to this, again continue to carry out write activity with the laser power of upgrading by starting point more afterwards, make the time of whole write activity be extended.(II) according to foregoing invention, must " not see connection " (Linkless) between halt and the starting point or " seamless link " (Seamless Link), so just can be so that the data that writes is able to continuously, yet, the control chip of CD-ROM drive must very accurate control can reach above-mentioned effect, when control chip can't be controlled halt and starting point accurately, then may cause the failure of write activity.(III) if the specific light disc of the particular vendor that the user bought is to utilize the standard write-in policy to carry out write activity, though writing quality at the back segment of track can improve, yet, the quality that writes of track leading portion can be relatively poor, that is to say that whole (100 or 50) discs that the user buys simultaneously all can't make writing quality and remaining on the level of whole discs.
Summary of the invention
The object of the present invention is to provide a kind of learning type write strategy adjusting method and device, to solve the problem that writes streaking of known whole discs.
For achieving the above object, learning type write strategy adjusting gear provided by the invention applies to a discs of a burning CD ROM one particular vendor one specific kenel, comprising:
One control chip, this control chip begin a write activity in the time of can be in response to a write command of a host side and write data in order to receive one, and this is write digital coding form a modulation signal;
One internal memory can store one first write-in policy in this internal memory at least, and this first write-in policy can apply to those discs of this this specific kenel of particular vendor; And
One optical read/write head, this optical read/write head can receive a Laser Driven signal in order to a plurality of bright and dark information of record on this discs;
Wherein, when this control chip is confirmed to load this discs of this this specific kenel of particular vendor, utilize this modulation signal and this first write-in policy to form this Laser Driven signal, and this control chip can read those bright and dark information and is stored in this internal memory in order to replace this first write-in policy in order to produce one second write-in policy after this write activity is finished.
Described learning type write strategy adjusting gear, wherein this write activity can be one one times one rail write activities, one one times one section write activities, the write activity that one one times one disc write activities or a package write.
Described learning type write strategy adjusting gear, wherein the difference of this first write-in policy and this second write-in policy is zero-time, an end-of-pulsing time or a pulse width of a pulse.
Described learning type write strategy adjusting gear, wherein the difference of this first write-in policy and this second write-in policy is erase a power or a substrate bias power of a Writing power.
Described learning type write strategy adjusting gear saves as a non-voltile memory in wherein being somebody's turn to do.
Learning type write strategy adjusting method provided by the invention applies to a discs of a burning CD ROM one particular vendor one specific kenel, comprises the following steps:
When this CD-ROM drive utilization is stored in after one first write-in policy in the internal memory finishes a write activity, read one and write data;
Writing one of data according to this that reads writes quality and judges the whether needs adjustment of this first write-in policy;
When this first write-in policy need be adjusted, utilize this to write quality and produce one second write-in policy; And
Store this second write-in policy to this internal memory in order to replace this first write-in policy.
Described learning type write strategy adjusting method, wherein this write activity can be one one times one rail write activities, one one times one section write activities, the write activity that one one times one disc write activities or a package write.
Described learning type write strategy adjusting method, wherein the difference of this first write-in policy and this second write-in policy is zero-time, an end-of-pulsing time or a pulse width of a pulse.
Described learning type write strategy adjusting method, wherein the difference of this first write-in policy and this second write-in policy is erase a power or a substrate bias power of a Writing power.
Described learning type write strategy adjusting method saves as non-voltile memory one by one in wherein being somebody's turn to do.
In other words, learning type write strategy adjusting gear of the present invention, apply to a discs of a burning CD ROM one particular vendor one specific kenel, comprise: a control chip begins a write activity in the time of can be in response to a write command of a host side and writes data in order to receive one, and this is write digital coding forms a modulation signal; One internal memory can store one first write-in policy at least, and this first write-in policy system can apply to those discs of this this specific kenel of particular vendor; And one optical read/write head can receive a Laser Driven signal in order on this discs the record a plurality of bright and dark information; Wherein, when this control chip is confirmed to load this discs of this this specific kenel of particular vendor, utilize this modulation signal and this first write-in policy to form this Laser Driven signal, and this control chip can read those bright and dark information and is stored in this internal memory in order to replace this first write-in policy in order to produce one second write-in policy after this write activity is finished.
Moreover, the present invention proposes a kind of learning type write strategy adjusting method, apply to a discs of a burning CD ROM one particular vendor one specific kenel, comprise the following steps: to be stored in after one first write-in policy in the internal memory finishes a write activity, read one and write data when this CD-ROM drive utilization; Writing one of data according to this that reads writes quality and judges the whether needs adjustment of this first write-in policy; When this first write-in policy need be adjusted, utilize this to write quality and produce one second write-in policy; And store this second write-in policy to this internal memory in order to replace this first write-in policy.
Description of drawings
Fig. 1 (a) is the write-in policy of CD-R discs.
Fig. 1 (b) is the write-in policy of CD-RW.
The shown process flow diagram that writes the method for quality for known improvement of Fig. 2.
Fig. 3 is shown to be the process flow diagram of the method for adjustment of learning type write strategy of the present invention.
Embodiment
Because known improvement writes the quality that writes that whole discs unanimity is provided that the method for quality can't be complete, therefore, the present invention proposes its device of method of adjustment of a kind of learning type write strategy of being done at the identical kenel discs of same label.
Please refer to Fig. 3, it is shown to be the process flow diagram of the method for adjustment of learning type write strategy of the present invention.When discs loading CD-ROM drive is used to write data (step 510), CD-ROM drive is at first confirmed the kenel and the manufacturer of discs, and can be by finding out one first write-in policy (step 515) in the CD-ROM drive internal memory; Then, CD-ROM drive is carried out best power control in order to setting laser power, and first write-in policy of arranging in pairs or groups comes write data (step 520) in discs; When data write finish after (step 525), CD-ROM drive reads the data (step 530) that before write; Write quality by the data that read and judge whether write-in policy needs to adjust (step 535); The quality that writes of representing to write with first write-in policy this kenel discs of this manufacturer when write-in policy does not need to adjust serves as good, so first write-in policy in the internal memory does not need change (step 550); When write-in policy need be adjusted, represent with first write-in policy write this manufacturer this kenel discs to write quality bad, adjust preferable second write-in policy (step 540) and second write-in policy be embedded in the internal memory in order to replace the first original write-in policy (step 545) so must basis write quality this moment.
According to embodiments of the invention, suppose that the user buys in the internal memory of identical its CD-ROM drive of kenel discs of a large amount of same manufacturer to there is no corresponding write-in policy.When carrying out write activity for the first time, the control chip of CD-ROM drive can be treated as first write-in policy and finish whole write activity with the standard write-in policy, write finish after the control chip of CD-ROM drive can read the data that before write and judge whether that according to writing quality needs adjust write-in policy, if this first write-in policy need be adjusted, then adjust preferable second write-in policy and second write-in policy is embedded in the internal memory in order to replace the first original write-in policy according to writing quality.Therefore, when the discs of this kenel of this manufacturer is placed in the CD-ROM drive when carrying out write activity once more, this CD-ROM drive can be found out this kenel discs of this manufacturer in internal memory second write-in policy writes data.Therefore, this write activity write quality can than a preceding write activity to write quality not bad.In like manner, when the user for the third time when the discs with this kenel of this manufacturer be placed in carry out write activity in the CD-ROM drive after its write quality can than a preceding write activity to write quality not bad.
That is to say, utilize the method for adjustment of learning type write strategy of the present invention, it writes the uniform quality that writes that quality can increase along with the number of times of write activity and become better and better and can keep this time write activity for the discs of the identical kenel of same manufacturer.
According to embodiments of the invention, write quality in utilization and adjust in the step of write-in policy, CD-ROM drive can utilize and previous write the correction that data and Writing power are carried out best power control, and the laser power after will proofreading and correct is embedded in internal memory.Perhaps, the light and shade information that is in fact write down according to the discs situation of arranging changes initial, the concluding time or the pulse width of the pulse of write-in policy.For instance, when " secretly " record length that CD-ROM drive reads through after conversion all greater than the time span of reality, for example write down " secretly " information of 4T in theory, during actual reading then for 4.2T " secretly " information, the pulse bandwidth of this interval scale write-in policy must reduce, therefore, the control chip of CD-ROM drive can adjust a preferable write-in policy and is recorded in the internal memory of CD-ROM drive according to the quality that writes that reads.When the discs of the identical kenel of same manufacturer was performed a write activity once more, the control chip of CD-ROM drive just can utilize adjusted write-in policy in the internal memory to carry out the write activity of this time.
Moreover, write activity of the present invention can comprise one time one rail (Track At Once, be called for short TAO) write activity, one time one section (Session At Once, be called for short SAO) write activity, one time one disc (Disc At Once is called for short DAO) write activity or package write the write activity of (Package Write).
Certainly, the present invention can also be used in the adjustment of the write-in policy that the specific kenel of the specific label of record has been arranged in the internal memory, that is to say, though the discs of the specific kenel of particular vendor on the books in the CD-ROM drive, use learning strategy method of adjustment of the present invention also can write the quality adjustment, make adjusted the better of quality that write.
Because the present invention need not stop in the process of write activity and open the beginning once more, therefore can save design complicated in the control chip, and make the time of write activity significantly to reduce.Moreover the present invention can not produce the quality that writes of the track leading portion of discs can be relatively poor, the track back segment write quality preferably situation take place, that is to say that utilization the present invention can make the quality that writes of whole discs remain on the level.
In sum; though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this technician; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the content that claim defines.
Claims (10)
1. a learning type write strategy adjusting gear applies to the discs that a burning CD ROM one manufacturer one can write kenel, comprising:
One control chip, this control chip begin a write activity according to a write command of a host side and write data in order to receive one, and this is write digital coding form a modulation signal;
One internal memory can store one first write-in policy at least in this internal memory, and this first write-in policy can apply to this manufacturer, and this can write this discs of kenel; And
One optical read/write head, this optical read/write head can receive a Laser Driven signal in order to a plurality of bright and dark information of record on this discs;
Wherein, when this can write this discs of kenel when this this manufacturer of control chip affirmation loading, utilize this modulation signal and this first write-in policy to form this Laser Driven signal, and this control chip can read a plurality of bright and dark information and is stored in this internal memory in order to replace this first write-in policy in order to produce one second write-in policy after this write activity is finished.
2. learning type write strategy adjusting gear as claimed in claim 1, wherein this write activity can be one one times one rail write activities, one one times one section write activities, the write activity that one one times one disc write activities or a package write.
3. learning type write strategy adjusting gear as claimed in claim 1, wherein the difference of this first write-in policy and this second write-in policy is zero-time, an end-of-pulsing time or a pulse width of a pulse.
4. learning type write strategy adjusting gear as claimed in claim 1, wherein the difference of this first write-in policy and this second write-in policy is erase a power or a substrate bias power of a Writing power.
5. learning type write strategy adjusting gear as claimed in claim 1 saves as a non-voltile memory in wherein being somebody's turn to do.
6. a learning type write strategy adjusting method applies to the discs that a burning CD ROM one manufacturer one can write kenel, comprises the following steps:
When this CD-ROM drive utilization is stored in after one first write-in policy in the internal memory finishes a write activity, read one and write data;
Writing one of data according to this that reads writes quality and judges the whether needs adjustment of this first write-in policy;
When this first write-in policy need be adjusted, utilize this to write quality and produce one second write-in policy; And
Store this second write-in policy to this internal memory in order to replace this first write-in policy.
7. learning type write strategy adjusting method as claimed in claim 6, wherein this write activity can be one one times one rail write activities, one one times one section write activities, the write activity that one one times one disc write activities or a package write.
8. learning type write strategy adjusting method as claimed in claim 6, wherein the difference of this first write-in policy and this second write-in policy is zero-time, an end-of-pulsing time or a pulse width of a pulse.
9. learning type write strategy adjusting method as claimed in claim 6, wherein the difference of this first write-in policy and this second write-in policy is erase a power or a substrate bias power of a Writing power.
10. learning type write strategy adjusting method as claimed in claim 6 saves as a non-voltile memory in wherein being somebody's turn to do.
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| CNB2006100791465A CN100458932C (en) | 2006-05-10 | 2006-05-10 | Learning type write strategy adjusting method and device |
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| CNB2006100791465A CN100458932C (en) | 2006-05-10 | 2006-05-10 | Learning type write strategy adjusting method and device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409301A (en) * | 2001-09-25 | 2003-04-09 | Lg电子株式会社 | Method for signal recording in recording medium |
| US6894967B2 (en) * | 2000-11-21 | 2005-05-17 | Yamaha Corporation | Optical disk recorder for writing data with variable density |
| CN1619656A (en) * | 2003-10-18 | 2005-05-25 | 戴尔产品有限公司 | Method and system for setting optical drive write speed |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6894967B2 (en) * | 2000-11-21 | 2005-05-17 | Yamaha Corporation | Optical disk recorder for writing data with variable density |
| CN1409301A (en) * | 2001-09-25 | 2003-04-09 | Lg电子株式会社 | Method for signal recording in recording medium |
| CN1619656A (en) * | 2003-10-18 | 2005-05-25 | 戴尔产品有限公司 | Method and system for setting optical drive write speed |
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