CN100424764C - Power controlling method based on time-base error feedback - Google Patents
Power controlling method based on time-base error feedback Download PDFInfo
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- CN100424764C CN100424764C CNB2006101414118A CN200610141411A CN100424764C CN 100424764 C CN100424764 C CN 100424764C CN B2006101414118 A CNB2006101414118 A CN B2006101414118A CN 200610141411 A CN200610141411 A CN 200610141411A CN 100424764 C CN100424764 C CN 100424764C
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Abstract
The power control method based on time-base error feedback comprises: correcting the optimal power of CD to obtain a reference burning power; adding and subtracting former power with a testing value to obtain the first and second writing power; then, burning the first/second piece of CD by the first/second burning power to read the piece and detect the corresponding time-base error signal; finally, comparing two error signal to adjust the burning power.
Description
Technical field
The invention relates to a kind of Poewr control method, particularly about a kind of Poewr control method that is applied to optical disk burn-recording.
Prior art
The progress of science and technology and network convenient cause the network information to pour in large quantities in the PC, and the optical record medium that also makes storage data use becomes easily available instrument.Being used for the optical record medium of long-term and a large amount of storage datas at present mainly is to utilize CD writers that data are carried out burning, with data integrity be stored in optical record medium in.
Please refer to shown in Figure 1ly, it is the process flow diagram for known CD-ROM device burning CD-RW discsCD-RW.Writing user's data to the CD-RW discsCD-RW, at first can be earlier a read/write head of CD-ROM device be carried out powertrace and proofread and correct (Power Curve Calibration), that is with the laser of the read/write head of different driven CD-ROM device, and the output power of laser of measurement read/write head under each voltage, use the laser drive voltage of obtaining read/write head and the powertrace of output power, for subsequent power control with (step S11).(Optimum Power Calibration OPC), uses the best corrected power (step S12) that obtains the recordable optical disc sheet then to carry out the optimization capability correction.
Finish after the first two step, read head carries out burning according to best corrected power to CD-RW discsCD-RW, uses user's data are write to (step S13) on the CD-RW discsCD-RW, intactly writes to up to data and finishes burning (step S14) on the CD-RW discsCD-RW.
Yet, in the process of actual optical disk burn-recording, the best power of recordable optical disc sheet and on-fixed, but can produce change along with the influence of external environment factor and the material of CD-RW discsCD-RW own.For example, when environment temperature was high more, CD player's read head then needed to export bigger recording power if desire to keep identical burning quality.In addition, the change of CD-ROM device linear velocity also can influence the variation of best recording power; Moreover influence such as processing procedure factor such as inhomogeneous or thickness is inequality because of the coating of CD-RW discsCD-RW Internal and external cycle and CD-RW discsCD-RW material behavior difference also can cause the change of best recording power.
Be with, when best recording power produces change in the optical disk burn-recording process, if its recording power is not compensated or is proofreaied and correct, then can cause the burning quality generation difference or the data of CD-RW discsCD-RW completely to store, what is more, after can causing optical disk burn-recording to finish, the reading of data is difficult for or reads failure.
Summary of the invention
Because above-mentioned problem the invention provides a kind of Poewr control method according to the time base error feedback.
The present invention discloses a kind of Poewr control method according to the time base error feedback, and this method comprises following steps: CD-RW discsCD-RW is carried out the optimization capability correction, to obtain the benchmark recording power.Then, with the addition and subtracting each other and the win Writing power and second Writing power respectively of benchmark recording power and test value.Then, come first fragment of recordable optical disc sheet, and read first fragment of CD-RW discsCD-RW, to detect the first time base error signal with first Writing power.Afterwards, come second fragment of recordable optical disc sheet, and read second fragment of CD-RW discsCD-RW, to detect one second time base error signal with second Writing power.And relatively the size of the first time base error signal and the second time base error signal is adjusted the benchmark recording power.
The present invention also discloses a kind of Poewr control method according to the time base error feedback, and this method comprises following steps: CD-RW discsCD-RW is carried out the optimization capability correction, to obtain the benchmark recording power.Then, with the addition and subtracting each other and the win Writing power and second Writing power respectively of benchmark recording power and test value.Then, come several first fragments of recordable optical disc sheet, and read several first fragments of CD-RW discsCD-RW, to detect several first time base error signals with first Writing power.Afterwards, come several second fragments of recordable optical disc sheet, and read several second fragments of CD-RW discsCD-RW, to detect several second time base error signals with second Writing power.Average respectively these first time base error signals and these second time base error signals and win AME and one second AME.And relatively the size of first AME and second AME is adjusted the benchmark recording power.
Description of drawings
Fig. 1 is a kind of process flow diagram of known CD-ROM device burning CD-RW discsCD-RW;
Fig. 2 is the process flow diagram according to the Poewr control method of time base error feedback according to preferred embodiment of the present invention; And
Fig. 3 is according to the present invention's process flow diagram according to the Poewr control method of time base error feedback of preferred embodiment in addition.
Embodiment
Please refer to shown in Figure 2ly, be the process flow diagram according to the Poewr control method of time base error feedback of preferred embodiment of the present invention.Poewr control method is to comprise following steps S21～S28.
At first the laser of the read/write head of CD-ROM device being carried out powertrace proofreaies and correct, laser with the read/write head of different driven CD-ROM device, and the output power of laser of measurement read/write head under each voltage, use the laser drive voltage of obtaining read/write head and the powertrace of output power, for the usefulness (step S21) of subsequent power control.Then CD-RW discsCD-RW is carried out the optimization capability correction, to obtain benchmark recording power (P) (step S22).With benchmark recording power (P) and test value (Δ P) addition and the Writing power of winning (P1), benchmark recording power (P) and test value (Δ P) subtracted each other and second Writing power (P2) (step S23), the calculating of these Writing powers as with following formula 1 with shown in the formula 2:
P1=P+ Δ P (formula 1)
P2=P-Δ P (formula 2)
Then, with first fragment of first Writing power (P1) recordable optical disc sheet, so that data are write on first fragment, and read first fragment of CD-RW discsCD-RW, to detect first time base error (Jitter) signal (J1) (step S24).Then, with second fragment of second Writing power (P2) recordable optical disc sheet, so that data are write on second fragment, and read second fragment of CD-RW discsCD-RW, to detect the second time base error signal (J2) (step S25).Afterwards, relatively the size of the first time base error signal (J1) and the second time base error signal (J2) is P ' (step S26) to adjust benchmark recording power (P) from P.Then, judge whether whole data have write to (step S27) on the CD-RW discsCD-RW.When data have write when finishing, then finish recordable optical disc sheet (step S28).Otherwise, when still having data to be written during to CD-RW discsCD-RW, then return again to step S23, and adjusted benchmark recording power (P ') is replaced former benchmark recording power (P) substitution formula 1 upgrade first Writing power (P1) and second Writing power (P2) with formula 2, and then carry out follow-up step in regular turn, use the laser that makes read/write head with first Writing power (P1) after upgrading and other fragments of second Writing power (P2) recordable optical disc sheet, thereby follow-up data are write on the CD-RW discsCD-RW.
In the present embodiment, in above-mentioned steps S26, as (the J1＜J2) of the first time base error signal during less than the second time base error signal, then transfer to increase the benchmark recording power, adjusted benchmark recording power (P ') between original benchmark recording power (P) and first Writing power (P1) (P '＞P); When the second time base error signal during less than the first time base error signal (J2＜J1), then adjust and reduce the benchmark recording power, adjusted benchmark recording power (P ') between original benchmark recording power (P) and second Writing power (P2) (P '＜P); When the first time base error signal equals the second time base error signal (J1=J2), then keep the benchmark recording power and do not adjust (P '=P).
In addition, in the present embodiment, in step S24, with first fragment of first Writing power (P1) recordable optical disc sheet, read/write head reads first fragment and detects the first time base error signal (J1) simultaneously read/write head more again then earlier; Similarly, in step S25, with second fragment of second Writing power (P2) recordable optical disc sheet, read/write head reads second fragment and detects the second time base error signal (J2) simultaneously read/write head more again then earlier.
Moreover read/write head recordable optical disc sheet also can carry out simultaneously with detecting time base error signal, is not must want successively to carry out respectively.For example in step S24,, also detect the second time base error signal (J2) simultaneously when read/write head during with first Writing power (P1) recordable optical disc sheet; Similarly, among step S25,, also detect the first time base error signal (J1) simultaneously when read/write head during with second Writing power (P2) recordable optical disc sheet.
And please refer to shown in Figure 3ly, be to be the present invention's process flow diagram according to the Poewr control method of time base error feedback of preferred embodiment in addition.The Poewr control method of present embodiment comprises following steps S31～S39.
At first the read/write head to CD-ROM device carries out powertrace correction (step S31).Then a CD-RW discsCD-RW is carried out the optimization capability correction, to obtain benchmark recording power (P) (step S32).With benchmark recording power (P) and test value (Δ P) addition and the Writing power of winning (P1), benchmark recording power (P) and test value (Δ P) subtracted each other and second Writing power (P2) (step S33), step S31～S33 is identical with the step S21～S23 of previous embodiment.
Then, several first fragments with first Writing power (P1) recordable optical disc sheet, data being write on these first fragments, and read these first fragments of CD-RW discsCD-RW, to detect several corresponding respectively first time base error signals (J1) (step S34) of these first fragments.Then, several second fragments with second Writing power (P2) recordable optical disc sheet, data being write on these second fragments, and read these second fragments of CD-RW discsCD-RW, to detect several corresponding respectively second time base error signals (J2) (step S35) of these second fragments.If on CD-RW discsCD-RW, each first fragment is being connected of interlocking with each second fragment, and read/write head is alternately burning first fragment and second fragment then, uses that data are write to first fragment and second fragment.In addition, in step S34 and S35, also be similar to the step S24 and the S25 of previous embodiment, read/write head recordable optical disc sheet can successively carry out respectively with detecting time base error signal, also can carry out simultaneously.
Then, distinguish average these first time base error signals (J1) and these second time base error signals (J2) and AME of winning (J1 ') and second AME (J2 ') (step S36).Afterwards, relatively the size of first AME (J1 ') and second AME (J2 ') is P ' (step S37) to adjust the benchmark recording power by P.
Afterwards, judge whether whole data have write to (step S38) on the CD-RW discsCD-RW,, then finish recordable optical disc sheet (step S39) when data have write when finishing.Anti-, when still having data to be written during to CD-RW discsCD-RW, then return again to step S33, and adjusted benchmark recording power (P ') is replaced former benchmark recording power (P) substitution formula 1 upgrade first Writing power (P1) and second Writing power (P2) with formula 2, and then carry out follow-up step in regular turn, use making read/write head, thereby follow-up data are write on the CD-RW discsCD-RW with first Writing power (P1) after upgrading and other fragments of second Writing power (P2) recordable optical disc sheet.
In addition, in aforesaid two embodiment, in this method employed CD-RW discsCD-RW be writable disposable type laser disc (CD-R), rewritable type laser disc (CD-RW), writable disposable type digit audio-visual laser disc (DVD-R), rewritable formula digit audio-visual laser disc (DVD-RW, DVD+RW) and dynamic random memory digit audio-visual laser disc (DVD-RAM), High Resolution numerical digit video signal video disc (HD-DVD), Blu-ray Disc (Blue-ray disc).
In sum, because of the Poewr control method according to the time base error feedback of the present invention is to utilize the relatively size of the first/the second time base error signal that different fragments detected of the first/the second Writing power in the recordable optical disc sheet, adjust the benchmark recording power that carries out gained in the optimization capability correction step in CD-RW discsCD-RW, use and avoid in the optical disk burn-recording process, the situation that produces that change causes the burning quality of CD-RW discsCD-RW poor, data can't completely store, data read is difficult for or read failure because of best recording power takes place.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the claim scope its equivalent modifications of carrying out or change.
Claims (8)
1. Poewr control method according to time base error feedback comprises:
CD-RW discsCD-RW is carried out the optimization capability correction, to obtain the benchmark recording power;
With the addition and subtracting each other and the win Writing power and second Writing power respectively of this benchmark recording power and test value;
With first fragment of this this CD-RW discsCD-RW of first Writing power burning, and read this first fragment of this CD-RW discsCD-RW, to detect the first time base error signal;
With second fragment of this this CD-RW discsCD-RW of second Writing power burning, and read this second fragment of this CD-RW discsCD-RW, to detect the second time base error signal; And
The size of this first time base error signal and this second time base error signal relatively, adjusting this benchmark recording power,
Wherein this comparison step comprises:
When this first time base error signal during, then this benchmark recording power is transferred to increase less than this second time base error signal;
When this second time base error signal during, then this benchmark recording power is downgraded less than this first time base error signal; And
When this first time base error signal equals this second time base error signal, then this benchmark recording power will remain unchanged.
2. Poewr control method as claimed in claim 1, wherein after comparison step, this method more comprises:
According to adjusted this benchmark recording power another fragment of this CD-RW discsCD-RW is carried out burning.
3. Poewr control method as claimed in claim 2, after carrying out the burning step, this method more comprises:
Judge this CD-RW discsCD-RW whether finish by burning, when finishing, burning then finishes this optical disk burn-recording action, when burning is imperfect tense then upgraded this first Writing power and this second Writing power according to adjusted this benchmark recording power and this test value, to re-execute this first Writing power burning step, this second Writing power burning step and this comparison step.
4. Poewr control method as claimed in claim 1 wherein more comprised before this optimization capability correction:
Input test voltage is in the read/write head of CD-ROM device, and the recording power of measurement output, to obtain the powertrace standard of input voltage and recording power.
5. Poewr control method according to time base error feedback comprises:
CD-RW discsCD-RW is carried out the optimization capability correction, to obtain the benchmark recording power;
With the addition and subtracting each other and the win Writing power and second Writing power respectively of this benchmark recording power and test value;
With several first fragments of this this CD-RW discsCD-RW of first Writing power burning, and read described first fragment of this CD-RW discsCD-RW, to detect several first time base error signals;
With several second fragments of this this CD-RW discsCD-RW of second Writing power burning, and read described second fragment of this CD-RW discsCD-RW, to detect several second time base error signals;
Average respectively described first time base error signal and the described second time base error signal and win AME and one second AME; And
The size of this first AME and this second AME relatively, adjusting this benchmark recording power,
Wherein this comparison step is to comprise:
When this first AME during, then this benchmark recording power is transferred to increase less than this second AME;
When this second AME during, then this benchmark recording power is downgraded less than this first AME; And
When this first AME equals this second AME, then this benchmark recording power will remain unchanged.
6. Poewr control method as claimed in claim 5, wherein after this comparison step, this method more comprises:
According to adjusted this benchmark recording power another fragment of this CD-RW discsCD-RW is carried out burning.
7. Poewr control method as claimed in claim 6, after carrying out the burning step, this method more comprises:
Judge this CD-RW discsCD-RW whether finish by burning, when finishing, burning then finishes this optical disk burn-recording action, when burning is imperfect tense then upgraded this first Writing power and this second Writing power according to adjusted this benchmark recording power and this test value, to re-execute this first Writing power burning step, this second Writing power burning step, this average step, to reach this comparison step.
8. Poewr control method as claimed in claim 5 wherein more comprised before this optimization capability correction:
Input test voltage is in the read/write head of CD-ROM device, and the recording power of measurement output, to obtain the powertrace standard of input voltage and recording power.
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| CNB2006101414118A CN100424764C (en) | 2006-09-30 | 2006-09-30 | Power controlling method based on time-base error feedback |
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| CN1416121A (en) * | 2002-12-26 | 2003-05-07 | 威盛电子股份有限公司 | Method for feedback adjusting laser power of read head of optical disk drive and reated set |
| CN1455923A (en) * | 2001-02-07 | 2003-11-12 | 皇家菲利浦电子有限公司 | Apparatus for writing an optical record carrier |
| US20040062164A1 (en) * | 2002-09-30 | 2004-04-01 | Fujitsu Limited | Optical storage apparatus and abnormality detection method of detector for emission control |
| CN1619661A (en) * | 2003-11-17 | 2005-05-25 | 威盛电子股份有限公司 | Method and device for generating a stable power control signal |
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2006
- 2006-09-30 CN CNB2006101414118A patent/CN100424764C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05243655A (en) * | 1992-03-03 | 1993-09-21 | Mitsubishi Electric Corp | Semiconductor laser controller |
| WO1997007501A1 (en) * | 1995-08-18 | 1997-02-27 | Quantum Corporation | Control loops for low power, high speed prml sampling data detection channel |
| CN1455923A (en) * | 2001-02-07 | 2003-11-12 | 皇家菲利浦电子有限公司 | Apparatus for writing an optical record carrier |
| US20040062164A1 (en) * | 2002-09-30 | 2004-04-01 | Fujitsu Limited | Optical storage apparatus and abnormality detection method of detector for emission control |
| CN1416121A (en) * | 2002-12-26 | 2003-05-07 | 威盛电子股份有限公司 | Method for feedback adjusting laser power of read head of optical disk drive and reated set |
| CN1619661A (en) * | 2003-11-17 | 2005-05-25 | 威盛电子股份有限公司 | Method and device for generating a stable power control signal |
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