CN102332272A - Optical disk device - Google Patents
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Abstract
The invention provides an optical disk device, wherein the recording power can be controlled more accurately in OPC in real time than in the prior technology. Before an optical disc (10) records data, the test data can be recorded at the same time when the power change is recorded, the test data is replayed to obtain the asymmetry beta value of the swing of the data, and the recording power consistant with the object beta value is set as the best recording power. The data recording is stopped at each interval, the best recording power is corrected to enable the tested beta value at the recording end be consistant with the object beta value. After the second interval, the data recording is stopped, the beta value and the prior beta value are obtained utilizing the end portion of the same record, the time change amount of the beta value is caculated, and the best recording power is further corrected utilizing to the power correction amount corresponding to the time change amount.
Description
Technical field
The present invention relates to optical disc apparatus, relate in particular to the adjustment of recording power.
Background technology
In can the optical disc apparatus of record data known below technology: in order stably to keep the tracer signal quality, measure the β value, and controlling recording power is so that this β value is a desired value.
Following technology is disclosed in following patent documentation 1: at regular intervals or certain hour with regard to interruption logging; The playback of recorded terminal part; Measure the β value of this recording terminal end portion; β value that mensuration is obtained and target beta value compare and adjust recording power, in this so-called real-time OPC (Walking OPC), according to β value repeatedly calculate the β value with respect to the inverse of the variation ratio of recording power with as correction coefficient; And utilize the recording power after correction factor calculation is proofreaied and correct, come correction entries power according to recording power after the correction that calculates.
Patent documentation 1:JP spy opens the 2008-77714 communique
The β value is the parameter of the asymmetry of expression amplitude; With recording power stronger correlativity is arranged; Therefore it has been generally acknowledged that as long as so that measure the β value mode controlling recording power consistent with target beta value; But the β value also can because of the departure of sensitivity inequality or warpage, damage, pollution, servo-drive system in the face of the wavelength of the laser diode of environment temperature, light picker or temperature, CD, through the time change such as variation, in the past especially to through the time change almost and do not consider.
Promptly; In existing real-time OPC; Interruption logging is also measured the β value of recording terminal end portion and is compared with target beta value; But this mensuration β value is the β value behind the firm interruption logging, have through the time change, therefore come correction entries power might not guarantee recording power the best according to this mensurations β value.In other words, in existing real-time OPC, according to meeting through the time β value that changes nonce or provisional value come correction entries power, be difficult to make the recording power optimization.
Summary of the invention
Thereby the object of the present invention is to provide a kind of precision that compared with prior art can improve when measuring the β value and making the recording power optimization to improve the device of data recording quality according to the β value that mensuration obtains.
The present invention is a kind of optical disc apparatus, it is characterized in that, has: measure mechanism, the β value of asymmetry that expression is recorded in the amplitude of the data in the CD is measured; And set mechanism, according to a plurality of β values to obtaining under the different in time timing of same data division, calculate the β value through the time variable quantity, according to above-mentioned through the time recording power of variable quantity when coming the setting recording data.
In an embodiment of the invention, above-mentioned set mechanism has: the optimal recording power set mechanism, above-mentioned data division is set optimal recording power so that certain β value that regularly obtains down is consistent with target beta value; Through the time variable quantity calculation mechanism, calculate above-mentioned through the time variable quantity; Capability correction amount calculation mechanism, calculate with above-mentioned through the time variable quantity corresponding capability correction amount; And aligning gear, utilize above-mentioned capability correction amount to proofread and correct above-mentioned optimal recording power.
In addition; In another embodiment of the present invention; Above-mentioned data division is that to begin the back in data recording every at a distance from first at interval or the recording terminal end portion of very first time interrupt data when writing down; Above-mentioned optimal recording power set mechanism is set optimal recording power; So that just the β value of interrupt data record back above-mentioned recording terminal end portion promptly a β value is consistent with above-mentioned target beta value, above-mentioned through the time variable quantity calculation mechanism second interval after beginning according to an above-mentioned β value and data recording after or through second time after β value the 2nd β value of above-mentioned recording terminal end portion, calculate above-mentioned through the time variable quantity.
In addition, in another embodiment of the invention, above-mentioned capability correction amount calculation mechanism is utilized in mensuration obtains in the above-mentioned CD recording power and the relation between the β value, calculate with above-mentioned through the time variable quantity corresponding above-mentioned capability correction amount.
In addition; The present invention is a kind of optical disc apparatus; It is characterized in that; Has following mechanism: before to the video disc recording data, at the presumptive area record test data, and will represent the above-mentioned test data of playback and the β value determining recording power consistent with target beta value of the asymmetry of the amplitude of the data that obtain is the mechanism of optimal recording power when recording power is changed; Mechanism with above-mentioned optimal recording power record data in above-mentioned CD; First aligning gear whenever at a distance from first interval or the very first time interrupt data record, is proofreaied and correct optimal recording power so that the β value of measuring in recording terminal end portion is consistent with target beta value; Storing mechanism is stored above-mentioned β value; Begin the mechanism of data recording once more with corrected optimal recording power; And second aligning gear; Second at interval the back or through second time after the interrupt data record; Be utilized in that above-mentioned recording terminal end portion measures once again and the β value that obtains and be stored in the β value in the above-mentioned storing mechanism; Calculate the β value through the time variable quantity, and utilization with above-mentioned through the time variable quantity corresponding capability correction amount further above-mentioned corrected optimal recording power is proofreaied and correct.
In an embodiment of the invention, the above-mentioned second aligning gear utilization is reset above-mentioned test data and the recording power that obtains and the relation between the β value, calculate with above-mentioned through the time variable quantity corresponding above-mentioned capability correction amount.
According to the present invention,, thereby improved the data recording quality compared with prior art more accurately with the recording power optimization.
Description of drawings
Fig. 1 is the structural drawing of optical disc apparatus.
Fig. 2 be expression β value through the time variation chart.
Fig. 3 be expression β value through the time variation chart (logarithm demonstration).
Fig. 4 is the process flow diagram of expression recording power control.
Fig. 5 is the chart of the relation of expression recording power and β value.
Fig. 6 is the key diagram that changes the time of expression recording power.
Symbol description
10 CDs; 16 light pickers; 32 system controllers
Embodiment
With reference to the accompanying drawings embodiment of the present invention is described.
The ultimate principle of this embodiment at first is described.
In this embodiment; As its prerequisite, carry out following so-called real-time OPC: at regular intervals or certain hour with regard to interruption logging, the playback of recorded terminal part; Measure the β value of this recording terminal end portion, β value that mensuration is obtained and target beta value compare and adjust recording power.At this, the β value is one of the parameter that is used to estimate the asymmetry of amplitude, is the value of under CD-R specification, DVD specification, confirming.Specifically, the AC centered level C of the peak level P of the envelope value of the RF signal that combines with respect to AC and valley level B, RF signal establishes A1=P-C, A2=C-B, then is defined as β=(A1-A2)/(A1+A2).
In real-time OPC, the data through the interruption logging and the recording terminal end portion of resetting obtain measures the β value, through itself and target beta value are relatively adjusted recording power.Yet measuring β value in general is the value behind the firm interruption logging, β value can through the time change, so measure the β value can become through the time variation the nonce or the provisional value of β value.
Therefore, in this embodiment, data of playback of recorded terminal part behind just interruption logging and obtain β value, and the data of the same area of after passing through certain hour, resetting once again and obtain the β value once again.According to a plurality of β values that identical data is obtained in mutually different timing hold the β value through the time mode that changes, according to through the time variable quantity come correction entries power.
In this embodiment, through identical data being measured β value once again behind the certain hour, therefore can consider the β value through the time variation the correction of recording power.
At this, consider β value through the time change and the recording power that should proofread and correct is the recording power through the instant correction of real-time OPC.That is, through real-time OPC before interruption logging and according to before the β value correction entries power of recording terminal end portion, and in this embodiment, further according to the β value through the time variable quantity such recording power of having proofreaied and correct is proofreaied and correct again.
Bearing calibration to this embodiment schematically describes.
If certain recording power regularly is P0.At interruption logging behind the certain intervals or behind the certain hour, the data of playback of recorded terminal part, and obtain the β value.If the data of the recording terminal end portion of this moment are that d0, β value are β 0 (t0).β 0 (t0) is meant and carves the β value that t0 obtains at data d0 at a time.The β 0 correction entries power P 0 that obtains according to mensuration, and become recording power P1.
Then, at interruption logging once again behind the certain intervals or behind the certain hour, the data of playback of recorded terminal part and obtain the β value.If the data of the recording terminal end portion of this moment are that d1, β value are β 1.The β 1 correction entries power P 1 that obtains according to mensuration, and become recording power P2.At this moment, not only the d1 of recording terminal end portion is reset, also the d0 of recording terminal end portion in the past once of resetting is also reset and obtain the β value.If the β value of this moment is β 0 (t1).β 0 (t1) is meant the β value that obtains at data d0 at another moment t1 different with certain moment t0.Because β value is through time variation, so β 0 (t0) and β 0 (t1) differ from one another.In addition, in general the mistiming of t0 and t1 big more, the difference of β 0 (t0) and β 0 (t1) is big more.And calculate as β value through the time variable quantity Δ β=β 0 (t1)-β 0 (t0), obtain the variation delta P that is equivalent to the recording power that this Δ β measures, and be added on the recording power P2.That is, the recording power in this moment becomes P2+ Δ P.It should be noted that recording power P2 is the recording power after proofreading and correct according to the β value of data d1 before.
Constantly the mistiming of t1 and t0 constantly big more, β through the time change more greatly, obtain the β value of confirming more more easily.Therefore, from the interior circumferential periphery record data of CD the time, preferably,, peripheral part obtains β 0 (t1) when having write down data at interior perimembranous setting data d0.At this moment, towards periphery, the optimized precision of recording power is improved.
In addition, the variation delta P of the recording power corresponding with Δ β can obtain according to the relational expression of known in advance β value and recording power P.That is, in relation beta=β of β value and recording power P (P), obtain the Δ P corresponding and get final product with Δ β.This relation beta=β (P) has preferably passed through β and the relational expression of recording power P behind the grace time, but and nonessentially be defined in this, also can be the just β after the record and the relational expression of recording power P.Its reason is that specifically, the slope of relational expression is extremely important as long as relational expression has in order to calculate the precision of the required degree of Δ P corresponding with Δ β, but but it doesn't matter for its intercept.
Next concrete structure and the action to this embodiment describes.
Fig. 1 representes the one-piece construction of the optical disc apparatus of this embodiment.CDs 10 such as CD, DVD, Blu-ray are driven by Spindle Motor (SPM) 12.Spindle Motor SPM 12 is driven by driver 14, and driver 14 carries out servocontrol by servo processor 30 and becomes the rotational speed of expection.
Data recorded is carried out playback time on to CD 10, and the laser from the LD irradiation playback power of light picker 16 is transformed into electric signal and output with its reflected light with PD.Replay signal from light picker 16 is fed into RF circuit 26.RF circuit 26 generates focus error signal, trail-and-error signal according to replay signal, and is provided to servo processor 30.Servo processor 30 carries out servocontrol according to these rub-out signals to light picker 16, with light picker 16 be maintained in the focusing (on focus) state and follow the tracks of in (on track) state.In addition, RF circuit 26 is provided to address decoding circuitry 28 with the address signal that comprises in the replay signal.Address decoding circuitry 28 is according to the address date of address signal demodulation CD 10, and is provided to servo processor 30, system controller 32.
Address signal for example is swinging signal (wobble signal), through this swinging signal is extracted and decodes from replay signal, and the address acquisition data.In addition, RF circuit 26 supplies to binarization circuit 34 with playback RF signal.Binarization circuit 34 is the replay signal binaryzation, and the signal that obtains is provided to coding/decoding circuit 36.In coding/decoding circuit 36, with two-value signal demodulation and error correction and obtain replay data, this replay data is outputed to host apparatus such as personal computer via interface I/F40.In addition, when replay data was outputed to host apparatus, coding/decoding circuit 36 was temporarily storing replay data into laggard line output in the memory buffer 38.
When CD 10 identifying recording layers, supply to coding/decoding circuit 36 via interface I/F 40 from the data recorded of answering of host apparatus.The data recorded of will answering coding/decoding circuit 36 stores in the memory buffer 38, answers data recorded to encode to this, and supplies to as modulating data and to write strategy (Write Strategy) circuit 42.Write strategy circuit 42 and modulating data is transformed to for example multiple-pulse (train of impulses), and supply to driver 22 as record data according to the predetermined recording strategy.Write strategy can influence the record quality, therefore before data recording, carries out optimization.The laser that has carried out power modulation through record data is from the LD irradiation of light picker 16, and with data recording to CD 10.Recording power when data recording begins is adjusted as follows: utilize through OPC (Optical Power Control; Luminous power control) PCA (Power Calibration Area, power calibration area) that is formed on interior all sides of CD 10 tries to write test data.After having write down data, the laser of light picker 16 irradiation playback power and these record data of resetting, and supply to RF circuit 26.RF circuit 26 supplies to binarization circuit 34 with replay signal, and the data after the binaryzation are supplied to coding/decoding circuit 36.The action that system controller 32 control system are whole, and via servo processor 30 driving thread motors 18, the position of control light picker 16.
In addition, when CD 10 identifying recording layers, system controller 32 and the preceding different ground of the OPC executive real-time OPC of data recording.That is, at regular intervals or certain hour with regard to interruption logging, the playback of recorded terminal part is measured the β value of this recording terminal end portion, β value that mensuration is obtained and target beta value compare and adjust recording power.At this moment, executive real-time OPC, and the β value of the data of just past being reset at regular intervals measures once again, and β value that comparative measurements obtains and the β value that in the past same data is obtained are calculated its variation delta β.And, calculate with the β value through the time variation delta β corresponding recording power variation delta P, the further correction entries power through making recording power reflect this Δ P.
Fig. 2 represent in a part of CD 10 data recorded reset and the time of the β value that obtains changes.Among the figure, transverse axis is the elapsed time (sec) that finishes from record, and the longitudinal axis is the β value.The β value changes (minimizing) comparatively sharp after record just finishes, change reposefully afterwards (minimizing).This β value through the time change the thermal distortion of the recording film be considered to mainly to result from CD 10.Specifically illustrate the time variation of surveying the β value that obtains as follows.In addition, the CD that is used for instrumentation is DVD+R, and writing speed is 6 times of speed of CLV (linear velocity constant).
Elapsed time (sec) β (%)
0.797 0.27
5.922 -0.14
10.937 -0.37
20.89 -0.47
30.906 -0.58
60.922 -0.74
120.89 -0.86
300.906 -1.07
600.922 -1.31
1200.922 -1.54
1800.906 -1.72
3600.937 -2.05
The time of the β value when Fig. 3 representes that the time shaft with Fig. 2 is logarithm changes.As shown in the figure, the β value changes with respect to basic straight line of time (logarithm), can use a following expression formula approximate: β=-0.2648Ln (t)+0.3161.Coefficient of determination R
2Be 0.983.This means,, can infer the β value in the time interval arbitrarily through obtaining the β value at a certain time interval.In addition, mean to infer and passed through the β value of passing through after β value behind the grace time, the for example end of record (EOR) 1 hour.In this embodiment; Data for a part of CD 10; Calculate with the β value in certain moment with from this and passed through the variation delta P of the corresponding recording power of difference value Δ β between the β value behind the certain hour constantly; But as shown in Figure 3 and since β through the time change and can be similar to an expression formula, the β value that therefore also can infer when having passed through grace time (for example after certain begins 1 hour constantly) is calculated Δ β.
Fig. 4 representes the control flow chart of the recording power of this embodiment.At first, the PCA district at CD 10 before record carries out OPC, the optimal recording power P0 (S101) when calculating start-of-record.Specifically, recording power is changed interimly and try to write test data, measure the β value under the recording power separately.And, be that target beta value or near the determining recording power it are initial optimal recording power (S101) with measuring the β value.If initial optimal recording power is P0.
Then, with the initial optimal recording power P0 that obtains through OPC data recordng user data (S102) at CD 10.System controller 32 judges behind start-of-record, whether to have passed through certain intervals (S103).This certain intervals can be any of number of addresses, track number, sector number.It also can be distance physically.In addition, can not certain intervals also, and judge and whether passed through certain hour.If do not pass through certain intervals, then continue with current optimal recording power P0 record data.If passed through certain intervals, interruption logging (S104) then, the data of playback of recorded terminal part are measured its β value (S105).Measure the β value and store in the storer of system controller 32, and compare, calculate the β value capability correction amount consistent of measuring with target beta value with target beta value.If the capability correction amount is P1.And, use this capability correction amount that current optimal recording power is proofreaied and correct and be P0+P1 (S106).
Carry out above processing at regular intervals, thereby proofread and correct optimal recording power successively.Carry out so real-time OPC, and judge whether passed through certain hour (S107) concurrently with it from start-of-record.This certain hour be used to detect the β value through the time time of changing, be and the different timing of certain hour as the timing of executive real-time OPC.This certain hour for example can be 5 minutes or 10 minutes etc.If do not pass through certain hour, then remain unchanged and write down (S108), if passed through certain hour, the β value of then past having been measured the recording section of β value is measured (S110) once again.And the β value of relatively same recording section being measured and was stored in mensuration β value and this new mensuration in the storer in the past compares, calculating β value through the time variation delta β, calculate the capability correction amount (S111) corresponding with this Δ β.If this capability correction amount is P2.
Fig. 5 represent to be used to calculate with the β value through the time relation variation delta β corresponding capability correction amount P2, between β value and recording power.Among the figure, transverse axis is β value (%), and the longitudinal axis is recording power (mW).In the processing of S101, recording power is changed interimly and try to write test data, reset this test data and measure the β value, therefore can obtain the relation of β value and recording power.In general, recording power and β value can be similar to linear function, and be for example as shown in Figure 5, can be approximated to be recording power P=0.2133 β+20.946.Certainly, this has been to use the relational expression of the β value behind the firm record.And, can calculate the variation delta P of the recording power corresponding according to such relational expression with Δ β, the variation delta P of recording power is set at capability correction amount P2.For example, the capability correction amount that is equivalent to Δ β=1% is 0.2133mW etc.In addition, as a and the b among the recording power P=a β+b of above-mentioned linear function, according to writing speed, coil temperature, write conditions such as strategy and difference.
Calculate considered the β value through the time variable quantity capability correction amount P2 after, will be as the P0+P1 of current optimal recording power and the capability correction amount addition that newly calculates, and reset best power P0+P1+P2, and opening entry (S108) once more.Till end of record (EOR), handle (S109) repeatedly more than the execution.
Fig. 6 schematically representes the variation of the optimal recording power of this embodiment.Transverse axis is that the longitudinal axis is recording power (mW) from the time (sec) that record begins.Determine initial optimal recording power P0 through OPC, the record of beginning data.Moment t1 executive real-time OPC after data recording begins, it is P0+P1 that optimal recording power is proofreaied and correct from P0.And the optimal recording power P0+P1 after reinstating correction since moment t2 is data recording once more.
Moment t3 after data recording begins is executive real-time OPC once again, optimal recording power is proofreaied and correct from P0+P1 be P0+P1+P1 '.On the other hand, at this regularly down, if calculate simultaneously with the β value through the time variation delta β corresponding capability correction amount P2, then further proofread and correct the optimal recording power P0+P1+P1 ' in this moment, as P0+P1+P1 '+P2, begin data recording once more at moment t4.Among the figure, dot the optimal recording power P0+P1+P1 ' of the timing that does not carry out this embodiment, with solid line represented as this embodiment, to consider the β value through the time optimal recording power P0+P1+P1 '+P2 when changing.
More than embodiment of the present invention is illustrated, but the invention is not restricted to above-mentioned embodiment, can carry out various distortion.
For example, in this embodiment, the correction of OPC recording power down in real time regularly with considered β value through the time recording power that changes the correction timing consistent, but also nonessential both unanimities that makes also can be different timings.For example, describe with reference to Fig. 6, also can be in moment t2 and the timing between the t3 constantly, consider β value through the time variation, correction entries power.Yet, since in real time OPC with considered β value through the time recording power that changes correction, all be that temporary transient interruption logging is handled, therefore in order to shorten total writing time, preferably make two unanimities regularly.
In addition, in this embodiment, can also measure more than 2 times down in different respectively timings the β value at same record position, and according to the β value that obtains through the time variation and correction entries power successively.For example; About certain record position; If being located at t1 constantly measures the β value that obtains to measure the β value that obtains is β (t3) for β (t1), at moment t2 for β (t2), the β value that obtains in moment t3 mensuration; Then at first with the capability correction amount correction entries power corresponding, afterwards with capability correction amount correction entries power corresponding etc. with Δ β=β (t3)-β (t2) with Δ β=β (t2)-β (t1).Certainly, also can be as stated, β (t1), β (t2), β (t3) as function limit β through the time change, calculate β (t) as the β value under any time t, use the capability correction amount correction entries power corresponding with Δ β=β (t)-β (t1).
In addition, in this embodiment, the β value of considering to obtain at certain record position through the time variation and correction entries power; But the record position must not be a place; Also many places can be set, at this moment, the capability correction amount can be the mean value of the correcting value of the β value that obtains in many places.For example; Record position R1 is measured the β value and obtains β 1 (t1), β 1 (t2) at moment t1, t2; Record position R2 is measured the β value and obtains β 2 (t3), β 2 (t4) at moment t3, t4; Record position R3 is measured the β value and when obtaining β 3 (t5), β 3 (t6) at moment t5, t6; If with the corresponding capability correction amount of Δ β 1=β 1 (t2)-β 1 (t1) be Δ P1, with the corresponding capability correction amount of Δ β 2=β 2 (t4)-β 2 (t3) be Δ P2, with the corresponding capability correction amount of Δ β 3=β 3 (t6)-β 3 (t5) be Δ P3, obtain the capability correction amount through Δ P=(Δ P1+ Δ P2+ Δ P3)/3.Perhaps, also can through Δ β={ β 1 (t2)-β 1 (t1)+β 2 (t4)-β 2 (t3)+β 3 (t6)-β 3 (t5) }/3 obtain the β value through the time mean value that changes, and obtain corresponding with it capability correction amount.
Under any circumstance optimal recording power is all as making decision:
The following capability correction amount of the OPC of the initial best power of optimal recording power=set through OPC+in real time+with the β value through the time variation corresponding capability correction amount.
And then; The β value that can also mensuration be obtained through the time variable quantity during according to dish manufacturer, writing speed, record temperature store in the storer of system controller 32; When writing down, obtain next time be stored in storer in through the time variable quantity corresponding capability correction amount, the initial optimal recording power that obtains through OPC is proofreaied and correct.
Claims (6)
1. optical disc apparatus is characterized in that having:
Measure mechanism, the β value of asymmetry that expression is recorded in the amplitude of the data in the CD is measured; With
Set mechanism, according to a plurality of β values to obtaining under the different in time timing of same data division, calculate the β value through the time variable quantity, according to above-mentioned through the time recording power of variable quantity when coming the setting recording data.
2. optical disc apparatus according to claim 1 is characterized in that,
Above-mentioned set mechanism has:
The optimal recording power set mechanism is set optimal recording power so that certain β value that regularly obtains down is consistent with target beta value to above-mentioned data division;
Through the time variable quantity calculation mechanism, calculate above-mentioned through the time variable quantity;
Capability correction amount calculation mechanism, calculate with above-mentioned through the time variable quantity corresponding capability correction amount; And
Aligning gear utilizes above-mentioned capability correction amount to proofread and correct above-mentioned optimal recording power.
3. optical disc apparatus according to claim 2 is characterized in that,
Above-mentioned data division is that to begin the back in data recording every at a distance from first at interval or the recording terminal end portion of very first time interrupt data when writing down,
Above-mentioned optimal recording power set mechanism is set optimal recording power, so that just the β value of interrupt data record back above-mentioned recording terminal end portion is that a β value is consistent with above-mentioned target beta value,
Above-mentioned through the time variable quantity calculation mechanism second after beginning according to an above-mentioned β value and data recording at interval the back or through second time after β value the 2nd β value of above-mentioned recording terminal end portion, calculate above-mentioned through the time variable quantity.
4. according to claim 2 or 3 described optical disc apparatus, it is characterized in that,
Above-mentioned capability correction amount calculation mechanism is utilized in mensuration obtains in the above-mentioned CD recording power and the relation between the β value, calculate with above-mentioned through the time variable quantity corresponding above-mentioned capability correction amount.
5. an optical disc apparatus is characterized in that, has following mechanism:
Before to the video disc recording data; When being changed, recording power, and will represent the above-mentioned test data of playback and the β value determining recording power consistent with target beta value of the asymmetry of the amplitude of the data that obtain is the mechanism of optimal recording power at the presumptive area record test data;
Mechanism with above-mentioned optimal recording power record data in above-mentioned CD;
First aligning gear whenever at a distance from first interval or the very first time interrupt data record, is proofreaied and correct optimal recording power so that the β value of measuring in recording terminal end portion is consistent with target beta value;
Storing mechanism is stored above-mentioned β value;
Begin the mechanism of data recording once more with corrected optimal recording power; And
Second aligning gear; Second at interval the back or through second time after the interrupt data record; Be utilized in that above-mentioned recording terminal end portion measures once again and the β value that obtains and be stored in the β value in the above-mentioned storing mechanism; Calculate the β value through the time variable quantity, and utilization with above-mentioned through the time variable quantity corresponding capability correction amount further above-mentioned corrected optimal recording power is proofreaied and correct.
6. optical disc apparatus according to claim 5 is characterized in that,
The above-mentioned second aligning gear utilization is reset above-mentioned test data and the recording power that obtains and the relation between the β value, calculate with above-mentioned through the time variable quantity corresponding above-mentioned capability correction amount.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2010158517A JP5434829B2 (en) | 2010-07-13 | 2010-07-13 | Optical disk device |
| JP2010-158517 | 2010-07-13 |
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| JP2003272156A (en) * | 2002-03-19 | 2003-09-26 | Yamaha Corp | Optical disk recording method, optical disk recording apparatus, and optical disk recording program |
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2010
- 2010-07-13 JP JP2010158517A patent/JP5434829B2/en not_active Expired - Fee Related
- 2010-09-16 CN CN201010289940.9A patent/CN102332272B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003272156A (en) * | 2002-03-19 | 2003-09-26 | Yamaha Corp | Optical disk recording method, optical disk recording apparatus, and optical disk recording program |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102332272B (en) | 2015-02-25 |
| JP2012022733A (en) | 2012-02-02 |
| JP5434829B2 (en) | 2014-03-05 |
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